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16 people killed by Charles J. Whitman from a tower on the campus of the University of Texas.
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After the assassinations of Dr. Martin Luther King Jr. and President John F. Kennedy, President Lyndon B. Johnson enacted the Gun Control Act of 1968. This act regulated imported guns, strengthened background checks, and prevented felons and the mentally ill from obtaining firearms.
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22 people killed by James Oliver Huberty at a McDonald's in San Ysidro, CA.
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15 people killed by Patrick Sherrill at a United States Post Office in Edmond, OK.
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The Law Enforcement Officers Protection Act of 1985 made armor piercing rounds, or "cop killer" bullets, illegal to possess.
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24 people killed by George Hennard at Luby's cafeteria in Killeen, TX.
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15 people killed by Eric Harris and Dylan Klebold at Columbine High School in Littleton, CO.
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33 people killed by Seung-Hui Cho across the campus of Virginia Tech University.
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14 people killed by Jiverly Wong at the American Civic Association immigration center.
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13 people killed by Nidal Malik Hasan outside of Killeen, TX.
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12 people killed by James Eagan Holmes at the premiere of Dark Knight Rises in Aurora, CO.
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26 people killed by Adam Lanza at an elementary school in Newtown, CT.
