Related by context. Frequent words. (Click for all words.) 42 Seung Hui Cho 40 gunman Seung Hui Cho 38 Columbine 36 classmates 35 gunman 35 Columbine High 34 Virginia Tech 33 Winnenden 33 Columbine massacre 33 Cho Seung Hui 32 shootings 32 shooting 32 Cho 32 Tyler Clementi 32 Congresswoman Gabrielle Giffords 31 lone gunman 30 shooting rampage 30 middle schooler 30 classroom 30 shooting spree 29 Loughner 29 Westroads Mall 29 Kretschmer 29 Giffords 29 Rep. Gabrielle Giffords 28 Benke 28 Crandon 28 Matthew Shepard 28 Auvinen 28 BB gun 28 Jeff Weise 28 massacre 28 Kazmierczak 28 Hainstock 27 Holocaust 27 Alfred P. Murrah 27 Blacksburg 27 Weise 27 Robida 27 NIU 26 Hengel 26 Phoebe Prince 26 Fort Hood 26 Steger 26 slasher 26 Mauser 26 concealed carry 25 Morva 25 Concealed Carry 25 Maurice Clemmons 25 Sheriff Clarence Dupnik 25 Kauhajoki 25 Fort Hood Texas 25 black trench coat 25 Lee Loughner 25 Dylan Klebold 25 yearbook 24 Nazi Holocaust 24 room schoolhouse 24 committing suicide 24 Shooter 24 Heathers 24 lockdown 24 Jared Loughner 24 LITTLETON Colo. 24 Holocaust Memorial 23 Talovic 23 Ricardo Patton 23 school 23 Helmke 23 murderous rampage 23 Trolley Square 23 Sjodin 23 Littleton Colo. 23 Gunman 23 Odgren 22 Klebold 22 Prevent Gun Violence 22 Ivins 22 Megan Meier 22 cyberbullying 22 Fort Hood shooter 22 Carneal 22 Dupnik 22 Ward Churchill 22 Tiller 21 Erfurt 21 GLSEN 21 schoolwide 21 Fort Hood shootings 21 concealed handguns 21 concealed weapons 21 Bryant accuser 21 George Tiller 21 rampage 21 Shootings 21 Littleton 21 handguns 21 JonBenet 20 Cossey 20 postelection violence