How does wanting to belong make the protagonist stay with the gang?

The sense of belonging and the security belonging provides remains only as long as the gang member follows the rules of gang conduct. The moment Luis objects to a raid against the Sangras, he's in trouble with the gang. While he wants to make the point that the gangs have a bigger battle to fight than each other, he isn't heard. In that case, though Luis felt he wanted to do what was right for his fellow gang members, they were unable to see that point and Luis becomes an outcast. It should be noted that this need to belong sometimes seems to stifle individuality.