inside, they find corinne rey, a cartoonist for the paper. and her young daughter. they force her to give them the office security code and enter. their targets -- the staff of a newspaper that has long skewered radical islam and other religions. the masked men, walking into an editorial meeting. gunning down the editor, stephane charbonnier. and then nine others. you're describing an excuse. >> yes. >> reporter: they knew each person they wanted to kill. >> they called their names and shot them in the head. it was not ary riot. clearly an execution. >> reporter: five minutes later, the gunmen racing out, shooting at police and shouting -- >> allahu akbar! >> reporter: allahu akbar, god is great. and according to witnesses, "we avenged the prophet mohammed." they shoot and wound one policeman, and then, running towards him, they execute him on the ground. sprinting to their car, they speed off. in their wake, a chaotic scene. the wounded on stretchers, neighbors shocked something like this could happen here. i can still hear the shots ringing through my ears, this w