WordNet sense 1 (a loose affiliation of gangsters in charge of organized criminal activities):

family, syndicate, syndicate, crime syndicate

WordNet sense 2 (an association of criminals):

pack, ring

WordNet sense 3 (a disorderly crowd of people):

rabble, rout, rouT, rout

WordNet sense 4 (press tightly together or cram):

jam, pile, throng