While riding with his family yesterday afternoon through the Harbor Gateway neighborhood, a 6-year-old boy was shot in the head. He is in critical condition. The shooter, described as a Latino man in his 20's, was apparently involved in a gang. The family of six was in a red sports utility vehicle around 12:30 p.m. when a man walked onto the road, flashed gang signs, and fired several shots at the car as it was......