Last night, a Brooklyn police officer was shot by a man suspected of smoking a doobie. I know, I know, petty druggies are so ruthless nowadays! Remember when potheads were peaceful? The bullet hit Officer Rory Mangra, 27, in his lower right leg at about 7:30 p.m. in Park Slope. The shooter, Kingsley Newland, 28, of Williamsburg, told cops he was sorry. Mangra and his partner, Eric Merizelde, 26, were in uniform, driving an unmarked car when they spotted the suspect smoking marijuana. It seems the guy was pretty paranoid because he ran. When the cops caught up to him, Newland pulled a .22-caliber semiautomatic pistol. He’s charged with attempted murder as well as assault, weapons and drug possession charges.