From a December 20 post by Gateway Pundit titled, “DC cop brings gun to snowball fight (video)”:

Barack Obama gave his marching orders this year:

Obama: “They Bring a Knife...We Bring a Gun”
Obama to His Followers: “Get in Their Faces!”
Obama on ACORN Mobs: “I don't want to quell anger. I think people are right to be angry! I'm angry!”
Obama To His Mercenary Army: “Hit Back Twice As Hard”

It looks like some people took him seriously.

A DC cop pulled a gun at a snowball fight in Washington DC yesterday.