Related by context. Frequent words. (Click for all words.) 70 Columbine 70 Columbine High 53 shootings 48 Klebold 47 Dylan Klebold 45 shooting spree 43 shooting rampage 43 massacre 42 Seung Hui Cho 39 sniper shootings 38 terrorist attacks 38 cyberbullying 37 Weise 37 cyber bullying 37 Matthew Shepard 37 JonBenet 37 Kazmierczak 36 slayings 36 Beslan 36 Loughner 36 Holocaust 35 bullying 35 Phoebe Prince 35 bombings 35 Virginia Tech 34 Tyler Clementi 34 schoolwide 34 fatal shootings 34 tragedy 34 Jared Loughner 34 tragedies 34 assassination 34 Shootings 33 Politkovskaya 33 An Inconvenient Truth 33 lockdowns 33 Benke 33 gunman 33 rampage 33 shooting 33 Bhutto assassination 33 Harvey Milk 33 killings 32 massacres 32 communal riots 32 concealed carry 32 Congresswoman Gabrielle Giffords 32 middle schooler 32 atrocity 32 bomb blasts 32 Sodini 32 Hengel 32 Myspace.com 32 Unabomber 32 Prevent Gun Violence 31 murders 31 classmates 31 holocaust 31 attacks 31 Jessica Lunsford 31 Odgren 31 Rwanda genocide 31 GLSEN 31 Giffords 31 classroom 31 Dunblane 31 copycat 31 BB gun 31 JonBenet Ramsey 31 assassination attempt 31 Sjodin 31 school 31 Nazi Holocaust 30 bombing 30 teen 30 parental involvement 30 Ward Churchill 30 Laramie Project 30 Amber Alerts 30 parental notification 30 incident 30 foiled plot 30 prank 30 hoaxes 30 arsons 30 NCLB 30 Gus Van Sant 30 Fort Hood 30 suicide bombings 30 gun 30 committing suicide 30 suicides 30 Alfred P. Murrah 30 Dupnik 30 lone gunman 30 Robida 30 Deepwater Horizon disaster 30 Massacre 30 explosions 29 Aarushi 29 Reservoir Dogs