An MTA bus driver was shot in the shoulder as he was walking to work in Brooklyn Friday, according to law enforcement sources. The victim, a 42-year-old man, was heading to work when he was struck outside a Lafayette Ave. supermarket near Marcus Garvey Blvd. in Bedford-Stuyvesant around 2 p.m., sour ces said. A grocer who was working in the store spotted the gunman dashing by with a weapon in his hand. “The guy was running behind me, and he passed with a gun in his hand,“ the market employee said. “He was shooting at a guy on the corner. He shot three or four times.” “Broad daylight,” he added. “Crazy.” Medics rushed the bus driver to Woodhull Hospital with a graze wound to his left shoulder, cops said. ...read more read less