On Dec. 4, 1969, law enforcement officers raided a home at 2337 Monroe St. in Chicago. First they killed Mark Clark, who sat by the door with a shotgun. Then they trained their gunfire on the south bedroom and opened fire. When the cops stopped firing, they pulled the 21-year-old chairman of the Illinois Black Panther Party out of the bullet-riddled room. After the officers noticed that he was still alive, they pumped two more bullets, at point-blank range, into the center of Fred Hampton’s forehead.