Top 10 Infamous Mass Shootings in the U.S.

These violent tragedies are a sobering reminder of how quickly life can change: unfortunately, mass shootings are nothing new, although sometimes it may seem as though there is a new incident every other week. While there is nothing to excuse the acts of a few lone gunmen, we can take some solace in the fact that these tragedies have helped law enforcement deal with future incidents. And, without acknowledging our past, we are destined to repeat it. In honor of the 14 women who were killed during Canada's École Polytechnique Massacre in Montreal, http://www.WatchMojo.com counts down ten of the most infamous mass shootings in United States history. read more...