Cop killings are on the rise in the US and Lt. Col. Dave Grossman, a law enforcement trainer and author of On Combat and On Violence blames video games. Some quick stats before we go into Grossman's statements. There have been 54 officer killings this year, a 60% increase from last year and the worst since 1975 when there were 99. Too bad they couldn't blame video games back then. Or could they have?