160,000 U.S. children miss school every day due to a fear of bullying. 75% of school shooting incidents have been linked to bullying and harassment. Bullying affects nearly 1 in 3 American schoolchildren in grades six through 10. 6 out of 10 teenagers in the U.S. say they witness bullying in school once a day. In 1981, a man who had been bullying residents of a small Missouri town was murdered in broad daylight when 46 people rose up against him, in an act of vigilante justice. People with unfortunate initials, such as P.I.G. or A.S.S. have significant lower life expectancy, due to psychological stress related to childhood bullying. 64% of children who were bullied did not report it. Michael Phelps, the most decorated Olympian of all time, was bullied as a kid for his gangly form and big ears. As a child, Elon Musk was bullied so severely, he once had to be hospitalized because of a beating from other students. In 2013, a parent filed a bullying report on a Texas high school football coach for beating his son's team 91-0. Only 1 in 10 victims of cyber-bullying tell a parent. 60% of boys described as bullies in school were convicted of at least one crime by the age of 24, a study found. Singer Demi Lovato pursued her education through home-schooling, after being a victim of bullying. Japanese Princess Aiko decided to stay home for a few months in 2010 due to bullying from her classmates. A 2013 study by Michigan State University found that unattractive people are more likely to be bullied in the workplace. Childhood bullying can cause lifelong psychological damage, including depression, anxiety, social withdrawal and severe trust issues.