It's iffy territory.

On one hand, the bar-owner (assuming he OWNS the bar) has the right to allow or dis-allow anyone from his place of business.

However, 'the bar' is a public space. Public places are watched over by the cities/states.

For the city to _order_ and _threaten_ the bar-owner to ban certain colors is barely in their place... (and only because 'the bar' is considered a public sphere)


Then again, if the bar-owner called on city & state police for help, then he (I guess?) kinda left the door open for them to demand further actions be taken.

Society demands that justice be had... but wants someone else to fix the problem. So the state/city steps in and attempts to legislate behavior.
To pick on all bikers because of one group of bad seeds is ignorant -- and yet the mentality runs rampant, and is socially accepted (at least insofar as 'the people' giving the city their knee-jerk-reaction consent for this to happen).

I think this is unncessary. The city government has passed the buck by simply asking the owner of the establishment to keep these people out.

Did it ever occur to the police that if a large group of people have the power to 'refuse to let the police in' and are assaulting and/or terrorizing people in a public place, that maybe instead of asking a lone, unarmed bartender to somehow get rid of them, that the proper course of action may be to return with a dozen armed officers and arrest every member of the gang on every possible charge?

Preventing the police from entering the bar is a 3rd degree felony in Texas: unlawful restraint of a public servant.

Then there's class A misdemeanor unlawful restraint for kicking out patrons.

Assault on the patrons who were removed.

Terroristic Threats

Distrubing the Peace

For those who can't actually be pinned with the actions there is conspiracy still.

I'd think that taking the whole bar-full of them downtown and arraigning them on felony charges the next morning would end the problem in one hell of a hurry without causing any stir from the ACLU and without putting the bar owner in a difficult position.