Calles sangrientas (1990)

A violent Mexican gang film where two gangs fight for their territory, honor, and glory: The Bikers vs. The Punks. Neither band hesitates to kill whoever is front of them, raping their teachers and killing on sight. They don't respect men, women, or children. They use anything for their purpose: spikes, hammers, knives. Trashiness at its best.