Shank (2009)

Cal belongs to a gang whose members pass their days getting high and menacing any unfortunate souls who wander into their path. But Cal has a dangerous secret. He's gay, and he's attracted to his best mate, a violent thug who indulges in random homoerotic moments with Cal, but remains tied to the group's unofficial leader, Nessa.

When Cal gets involved with a kind French student, the secrets are out, and they lead to a vicious confrontation.