This is a list of mass shootings in the U.S. since 2005. This list is 62 pages long, and has over 200 entries. 62 pages of senseless violence all too often perpetrated by emotionally and/or mentally disturbed people with easy access to firearms. Most of these shootings were committed using a legally held firearm. In 2007, guns murdered 468 people in Australia, England, Germany and in Canada put together, and 9,484 in the United States (link here). I suspect that Canada probably has the same percentage of disturbed people as the U.S., but far less gun violence thanks to our laws. I hope that the recent tragedy in Denver will spark a serious debate about the value of the Second Amendment, and the perceived "need" of citizens to be able to arm themselves.