Green’s Dictionary of Slang

(US) a gang.

1988		J.D. Vigil in Ethos 432: Several others stressed that it is the barrio or the klika (peer group within the gang) they belong to that makes the decisions.
1991		(con. 1978–9) in M. Jankowski Islands in the Street 163: Those guys who were against me and my klika won.
1993		L. Rodríguez Always Running (1996) 41: We didn’t call ourselves gangs. We called ourselves clubs or clicas.
2000		Other Side of the Wall: Prisoner’s Dict. July 🌐 Clica: Spanish for gang, also ‘ganga.’ Related verb: cliquear, meaning to cock up or ride with a gang. (Sp., TX.).
2005		J.E. Lawson Last Burn in Hell 12: Word, straight up representin’ da X3 clica.
2019		D. Winslow Border [ebook] [H]is status as a cartel man gave him the prestigious status of camarada—a comrade, an associate—and [...] he was accepted into la clica—the inner circle.