Who commits mass shootings?

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The man who opened fire at a Charleston church last week joined a list many would like to forget.http://feeds.feedburner.com/~ff/rss/cnn_us?d=yIl2AUoC8zA</img> (http://rss.cnn.com/~ff/rss/cnn_us?a=lhS5XbWpXOs:oB8cZdzr3IY:yIl2AUoC8zA) http://feeds.feedburner.com/~ff/rss/cnn_us?d=7Q72WNTAKBA</img> (http://rss.cnn.com/~ff/rss/cnn_us?a=lhS5XbWpXOs:oB8cZdzr3IY:7Q72WNTAKBA) http://feeds.feedburner.com/~ff/rss/cnn_us?i=lhS5XbWpXOs:oB8cZdzr3IY:V_sGLiPBpWU</img> (http://rss.cnn.com/~ff/rss/cnn_us?a=lhS5XbWpXOs:oB8cZdzr3IY:V_sGLiPBpWU) http://feeds.feedburner.com/~ff/rss/cnn_us?d=qj6IDK7rITs</img> (http://rss.cnn.com/~ff/rss/cnn_us?a=lhS5XbWpXOs:oB8cZdzr3IY:qj6IDK7rITs) http://feeds.feedburner.com/~ff/rss/cnn_us?i=lhS5XbWpXOs:oB8cZdzr3IY:gIN9vFwOqvQ</img> (http://rss.cnn.com/~ff/rss/cnn_us?a=lhS5XbWpXOs:oB8cZdzr3IY:gIN9vFwOqvQ)
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