your crew, your hommies, a group of friends, people who may or may not have your back

Your crew, gang, set, team or group of friends.

Your homies, your peeps, the gang of friends you hang out with that make you powerful.

Originally, a group of people (especially in the Old West) banded together for purposes of law enforement (and harassing Indians). From <i>posse comitatus</i>, Latin for "power of the county". Posse Comitatus is also the name of various white supremacist organizations that have appeared in the US over the years.

a group or gang that one hangs with

A gang of armed men organized by the sheriff to aid in hunting down an outlaw, mostly in the Old West.

your group of friends who you tight with and who got your back around haters