Recently I was sitting outside in a designated smoking area with about 20 or so guys who looked like bikers?

and they all had jackets that said "Banditos" on the back of them. One of the guys was chasing pigeons. (Seriously.) I was outside having a cigarette, and my boyfriend was with me. I was fine sitting with this group of people, since I was minding my own business...but my boyfriend looked a bit uncomfortable. Who are the "Banditos"? Does anyone here know?