At South Howard and West Pratt a jubilant mob caught up with several parked police cars, marked and unmarked. According to charging documents, 18-year-old Allen Bullock led a celebration of destruction. Using an orange traffic cone, he broke out the side window of an unmarked police car and tried to use its public-address system; failing in the attempt, he ripped it out. With other men he tried and failed to flip the car. He mounted the hood and used the cone to smash in the windshield. With two other young men he danced on several of the car roofs, and kicked out the rear window of another unmarked car. In another marked police car he found a peaked police cap and set it on his head at a rakish angle (he would later post a photograph of himself wearing the hat on his Facebook page). Social and other media captured much of the party. Mr. Bullock and his traffic cone made the front page of Sunday's Baltimore Sun.