The Columbine High School Massacre has to be one of the most tragic and infamous events in modern American history. In 1999, students Eric Harris and Dylan Klebold shot and killed 12 students and one teacher, Dave Sanders.

They got Sanders after he ran into the school cafeteria to warn hundreds of students to hide and get to safety.

Students alerted police to Sanders’ injury by placing a sign reading “one bleeding to death” in a classroom, but officers sadly thought it was a ruse and arrived too late to save the heroic teacher.

Ever since the time Concorde began commercial flights, there has only been one accident, one which occurred on the Paris to New York flight on July 25th, 2000.

The plane struck debris on the runway, puncturing a tire and a fuel tank just before take-off, which led to the craft being engulfed in flames.

The plane crashed into a hotel, killing all 100 passengers including four people on the ground below.

Not a lot of comedians are as universally beloved as Robin Williams. He had a reputation for being sweet, kind and caring. However, Williams struggled with mental illness throughout his life.

He often spoke of his battle with depression, and tragically lost his life following a Parkinson’s diagnosis in 2014. He was always gracious and generous, and here, Williams agreed to take a photograph with a fan at Dairy Queen just a few days before his passing.

They may by painted as cute and cuddly in the media, but there’s no getting away from the danger that bears present. In September 2014, five students in New Jersey were stalked by a 300-pound black bear, with 22-year-old Darsh Patel killed by the hungry animal.

Patel took this photograph minutes before the group were forced to split up and attempt to flee. When his phone was found, the screen had been punctured by the bear’s teeth.

A single bolt can hardly make a difference between life and death, but in this case, it really was. In 1943, the mayor of St. Louis together with 9 other politicians boarded a military glider, which was released from a C-47 cargo plane.

A single bolt on the glider came loose, causing the wing to be torn off. The vehicle plummeted to the ground with all ten passengers, including Mayor William Dee Becker, losing their lives.

The Titanic could possibly be the most famous tragedy in history, so people will have seen this picture before. This photo was taken just after the RMS Titanic set sail from Queenstown, where it would later strike an iceberg 375 miles south of Newfoundland.

2,224 passengers boarded the Titanic for its maiden voyage, but just 705 survivors were recovered by the RMS Carpathia after arriving on the scene of the sinking.

Nowadays, plane collisions in the sky are super rare, thanks to all the technology that exists to help them stay aware of what is around them. 1978 was a different time, which is why PSA Flight 182 accidentally crashed into a private plane above San Francisco.

All 135 passengers aboard the flight were killed, as were the two passengers of the private plane. Seven bystanders on the ground also lost their lives.

Paul Walker was famous for his role in the Fast and Furious series, so it was sadly ironic when he died in a high speed car accident.

His friend, Roger Rodas, was driving the Porsche with the actor in the passenger seat, and the car crashed into a lamp post and some trees travelling 80mph in a 45mph zone, killing both.

Walker’s father and daughter filed wrongful death suits against Porsche, resulting in settlements, while his brothers Cody and Caleb Walker stepped in to finish Paul’s scenes in 2015’s Furious 7.

Biggie Smalls, known as Notorious B.I.G, is considered to be one of the best rappers of all time. He was embroiled in the East Coast-West Coast hip-hop feud in the late 90s, even speculated to be involved in Tupac’s death in September 1996.

Smalls was killed in a drive-by shooting in March 1997, and this was one of the last photos taken of him beforehand.

The late Patrick Swayze was voted People Magazine’s Sexiest Man Alive in 1991, but just 19 years later, he contracted pneumonia. In December 2007, Swayze was diagnosed with stage IV pancreatic cancer, undergoing immediate chemotherapy and surgery.

By 2009, the cancer had metastasized to his liver. He passed away from complications of the disease in September at the age of 57.

The 2003 Station nightclub fire in West Warwick, Rhode Island remains to this day, the fourth deadliest nightclub fire in American history. It took the lives of 100 patrons while injuring 230 others.

During the band Great White’s headline show, their tour manager set off pyrotechnics, immediately igniting the flammable acoustic foam mounted to the back wall. Black smoke and fire engulfed the venue within two minutes. This photo was taken just seconds beforehand.

It was in 1995 when Robert Overacker decided to raise awareness for the homeless by going over the edge of the falls on a jet ski. The stunt did not go as planned and it quickly went from risky to fatal when Overacker’s rocket-propelled parachute failed to open.

Overacker’s body was recovered the next day and was rushed to Niagara General Hospital, where he was pronounced dead.

July 17th, 2014 was the date of one of the most tragic airplane disasters in history. Near the border between Russia and Ukraine, Malaysia Airlines Flight 17 was shot down, and all 283 passengers and 15 crew members who were on board were killed. This photo was of a family flying from Amsterdam to Kuala Lumpur.

The tallest and most famous mountain in the world, Everest is a lauded and aspirational expedition location for many explorers and enthusiasts. It’s also quite deadly, and was way more fatal in the years before anyone cleared the summit and came back.

In 1924, George Mallory and Sandy Irvine attempted the first ascent but died somewhere on the North Ridge. It was in 1953 when someone achieved the feat.

The 9/11 terrorist attack was a cultural flashpoint in America’s national consciousness and Western history overall, and the reverberations of the event are felt to this today.

In both Washington D.C. and New York, a total of 2,996 lives were claimed. United Airlines Flight 175 crashed into the South Tower of the World Trade Centre at 9:03 AM.

James Dean is a legendary Hollywood figure, and his name is synonymous with a bygone style, attitude and way of being. In October 1955, Dean was traveling to compete in the Salinas Road Race, having traded in his Speedster for the faster Porsche 550 Spyder just for the occasion.

He was ticketed for speeding, and was eventually killed when student Donald Turnupseed turned onto the highway ahead of him. Dean was unable to stop the car in time.

Johnny Cash’s world changed forever in May 2003, when his wife June Carter Cash passed away. She instructed him to keep working, so he completed 60 songs in the last four months of his life.

During his final performance, Cash said: “The spirit of June Carter overshadows me tonight with the love she had for me and the love I have for her. We connect somewhere between here and Heaven. She came down for a short visit, I guess, from Heaven to visit with me tonight to give me courage and inspiration like she always has.”

Johnny Cash died four months later in September of 2003.

In 1985, 520 people perished after Japan Airlines Flight 123 suffered an explosive decompression just 12 minutes into the flight, with all four crew members passing away with the majority of the passengers.

32 minutes later, the plane crashed on Mount Takamagahara. It was impossible for medical attention to be administered but miraculously, four passengers survived despite being seriously injured and stranded on the mountainside.

The lead singer of post-punk band Joy Division began experiencing seizures in 1978, and was eventually diagnosed with epilepsy by January the next year. He was initially hopeful about treatment, but as his seizures increased, he started abusing substances and alcohol to manage his symptoms, which just led to more deterioration.

The night before Joy Division’s first-ever American tour, Ian Curtis took his own life. This is him alongside his young daughter taken just five days before.

The third-deadliest hot air balloon disaster happened in 2012. A sightseeing balloon in Carterton, New Zealand collided with a series of power lines catching fire, killing both the pilot and all 10 passengers before it was brought back to the ground.

The deadliest hot air balloon accident came the next year in 2013, when 19 of 21 passengers in Egypt lost their lives when a leak in the balloon’s fuel tank caused it to deflate.

In 1961, America’s figure skating team was set to compete in the world championships in Belgium, but it wasn’t an appointment they were destined to make.

Before landing in Brussels, the Boeing 707 crashed and all 72 passengers and crew members were killed. The collision also killed a farmer on his land the plane had crashed into.

It’s not easy to process a pandemic in the same way that other disasters are approached. The threat is far more nebulous and the death toll more spread out.

But there are cases of fast-moving and tragic outbreaks, like the Ebola outbreak in 1976. The first recorded wave of the disease infected 318 people, killing 280 of them. Nurse Mayinga N’Seka is pictured here just days before she lost her life to the virus.

This was a tragedy so heart-rending because it is so unusual. In 1970, 14-year-old Keith Sapsford plummeted 200 feet to his death after the plane took off. He was hiding in one of the wheel wells and somehow wasn’t discovered, leading to him taking to the air.

This photo was taken by amateur photographer John Gilspin, who was taking pictures of the planes in the airport when this incident occurred.

In 2015, rock band Eagles of Death Metal were playing a sold-out show at the Bataclan in Paris. Four terrorists made their way into the venue and began shooting at the crowd.

90 fans were killed, including the guy working the band’s merch table during the concert. In the wake of the attack, many other bands showed support by covering the Eagles of Death Metal song I Love You All the Time, including Kings of Leon and Florence and the Machine.

The San Marino Grand Prix was held in Imola, Italy in 1994. Brazilian Formula One driver Ayrton Senna is pictured here resting just before the start of the race.

Tragically, Senna would not make it to the finish line. Ayrton Senna died by the side of the track after running straight off the road and into a retaining wall during the seventh lap of the race.

Snake charming has to be one of the most mysterious and revered professions in the world, and it takes an immense amount of bravery, skill and cool-headedness to do so. But no amount of practice or experience can remove the risk of working with a dangerous animal.

Ali Khan Bin Samsuddin was a renowned snake charmer and he had worked with the creatures for a long time, but his death came in 2006 when he failed to charm a cobra whose bite led to his death.

The Challenger mission was intended to be the next great step in America’s space exploration, but it ended in tragedy before it even began.

It was due to two redundant O-rings failing that kept the shuttle’s right solid rocket booster joint in place. The craft broke apart just 73 seconds into flight. The entire crew were killed in the implosion since the orbiter had no escape system.

Uruguayan Flight 571 crashed into the Andes Mountains on October 13, 1972. 28 of the 48 passengers and crew survived the initial impact, but it took 72 days for the group to be rescued and brought to safety.

In that time, survivors were forced to cannibalise the dead. It was on December 23rd of the same year when 16 people were brought back to society.

William McKinley was the 25th president of the United States. He served from 1897 to 1901. His term was cut short when anarchist steelworker Leon Czolgosz killed McKinley as he mounted the steps of the Temple of Music in Buffalo, New York. McKinley was succeeded by Vice President Theodore Roosevelt, who went on to become a historical icon in his own right.