What kinds of rules do gangs members follow in fights?

As the previous post noted, the combatants in the rumble in The Outsiders previously agreed to using no weapons--no knives, chains or heaters. It was not particularly a clean fight: Some fought two-against-one, others kicked, pulled hair, and pounded heads against the ground. Some previous rumbles between the two groups apparently included knives and chains, but both the greasers and Socs had decided against the use of weapons in this particular fight--possibly because of Bob's death from Johnny's knife. They may well have figured that enough blood had been shed.