Kevin Lewis Crouch walked into a tow lot in Northeast Washington on Tuesday afternoon and asked about a green car. But D.C. police said the 22-year-old man quickly pulled a gun on the tow truck driver who was trying to help him and demanded money. The driver began to run but tripped and fell, police said, and Crouch struck him twice in the head with the butt of his gun. The driver then heaved his wallet against a fence in the lot on Kenilworth Avenue. As Crouch went to grab the wallet, police said, the driver climbed into his white...