A gang which bragged about driving nice cars stolen from people they attacked. Any member who didn't commit those acts on a regular basis would be kicked out, and quite probably be subject to revenge by the other members.

As a condition of gang membership, you are agreeing to pretend other people's property rights can't apply to you. You pretend no one has the right of association where you are concerned- if someone tries to walk away when you insist on talking to them, the gang's rules say you can murder them. If someone tries to defend themselves from unwanted physical contact- or from even worse- the gang's rules say you can murder them. The rules you impose on others don't apply to you.

If you are a member of this gang you are openly admitting support for what the gang does. When you wear the gang colors, you are identifying yourself as a member in good standing. You are leaving no room for mistaken impressions of what you are, what you do, and what you support.

Any non-member caught wearing the gang colors or claiming to be a member would be kidnapped and caged, robbed, and quite possibly killed by actual members of the gang. The membership must be kept pure. There is no room for pretenders.