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Canadian outlaw biker and mass murderer

Libyan mass murderer

American domestic terrorist

American mass murderer

American mass murderer and spree killer; perpetrator of the University of Texas Tower shooting

Canadian mass murderer

American mass murderer

American mass murderer

Businessman and mass murderer

American mass murderer

American mass murderer

Convicted U.S. terrorist, mass murderer

American-Israeli mass murderer

American mass murderer

American mass murderer

American mass murderer

American mass murderer

American mass murderer

Executed American serial killer and mass murderer

American mass murderer

American mass murderer

Filipino mass murderer

Japanese mass murderer

20th century Chilean mass murderer

American mass murderer

Slovak mass murderer

Mass murderer

American mass murderer

Mass murderer

American mass murderer

Executed Greek mass murderer

American mass murderer

American mass murderer

Mass murderer

American mass murderer

Japanese mass murderer

Australian mass murderer, perpetrator of the Strathfield massacre

American mass murderer

Mass murderer

Mass murderer, rapist, cannibal