1. Clackamas Town Center shooting December 11, 2012, 22-year-old Jacob Tyler Roberts, ran into the shopping center wearing tactical clothing and a hockey mask and opened fire on shoppers and employees with a stolen AR-15. He fired a total of 17 shots, killing two people and seriously wounding a third. Having attempted to reload his weapon and dropping three magazines, Roberts entered a stairwell and committed suicide PressTV: Three killed in Oregon shopping mall shooting
  2. December 14, 2012 China: two school attacks on two continents on the same day:24 injured by stabbing at elementary school Chenpeng Village Primary School stabbing 
  3. 28 killed 2 injured  by gunfire at home and elementary school December 14, 2012, Sandy Hook Elementary School shooting  
  4. Erika Menendez Pushes Muslim who is actually Hindu Into Subway Train December 27, 2012 
  5. Dec. 29, 2012 Todd Shultz shot 11 times by police  outside K-Mart after shoplifting and waving knife