“When I was coming up, we had gangs here, gangs there, up the street, down the street, on my block, around the block,” explains barber-turned-rapper Boss Tripp 4Tre. “It was a lot going on then, and there is still a lot going on now.” What kept this San Antonio native son out of the line of fire was becoming a barber at a very young age. Cutting the heads of many of the city’s most notorious hardcore criminals kept him in their good graces. “Who wants beef with a barber?” he asks rhetorically. “I kept him looking fresh.” Earlier this year, he re-released the Chopstars (Drake’s Take Care, Little Dragon’s…