那个街区的居民晚上不敢出门，因为有一伙街头帮派经常在那里闹事。

Residents in that neighborhood are afraid to go out at night because of the violent ___street gang causing trouble there.

警察正在打击控制这个社区的街头帮派。

The police are cracking down on the ___street gang that controls this neighborhood.