Timeline of the 20 Worst Mass Shootings in American History

The United States has faced several terrible mass shooting tragedies, this is a brief look at the 20 most deadly and most   societally influential. It is important to note that half of the worst shootings to date have happened in the past 10 years.

For an interactive version of this timeline click here

References:

“Accused Oikos University shooter’s case suspended, mental… | http://www.ktvu.com.” San Francisco, Oakland & San Jose: Bay Area News, Weather &… | http://www.ktvu.com. http://www.ktvu.com/news/news/crime-law/accused-oikos-university-shooters-case-suspended-m/nSQ7W/ (accessed February 14, 2013).

Associated Press. “University Of Texas Tower Sniper Recalled – CBS News.” Breaking News Headlines: Business, Entertainment & World News – CBS News. http://www.cbsnews.com/2100-201_162-2689785.html (accessed February 14, 2013).

Associated Press. “Army reprimands 9 officers in Fort Hood shooting.” USA Today (Washington), March 11, 2011. http://usatoday30.usatoday.com/news/military/2011-03-10-fort-hood-shooting_N.htm (accessed February 14, 2013).

“Deadliest U.S. shootings.” The Washington Post: National, World & D.C. Area News and Headlines – The Washington Post. http://www.washingtonpost.com/wp-srv/special/nation/deadliest-us-shootings/ (accessed February 14, 2013).

“Fact file: Deadliest shootings in U.S. – US news – Crime & courts – Massacre at Virginia Tech | NBC News.” Breaking News & Top Stories – World News, US & Local | NBC News. http://www.nbcnews.com/id/18140540/#.URz-q1poTk0 (accessed February 14, 2013).

Goldstein, Richard. “Howard Unruh, 88, Dies; Killed 13 of His Neighbors in Camden in 1949.” New York Times (New York City ), October 19, 2009. http://www.nytimes.com/2009/10/20/nyregion/20unruh.html?pagewanted=all&_r=0 (accessed February 14, 2013).

Jack, Jennifer. “The 10 Deadliest U.S. School Shootings.” U.S. News (Washington ), April 16, 2007. http://www.usnews.com/usnews/news/articles/070416/16deadliest.htm (accessed February 14, 2013).

Minshew, Charles. “Deadliest U.S. shootings.” Washington Post, December 16, 2012. http://www.denverpost.com/breakingnews/ci_21123777 (accessed February 14, 2013).

Photos: NPR, UKR news, LA Times, Dallas News, Tumblr, CS Monitor, MSN News, Crosswalk.com, NBC, Syracuse, Ideastream, CBS, Zimbio