The nice thing is that the outlaw MC's fly their colors proudly so its possible to identity the dangerous elements. It just takes a little information to differentiate between them and your local collection of dentists and accountants out for a weekend ride.
So, you’re okay with summary execution by government just because someone was wearing the wrong colors.
I guess the cops should just start sweeping through all of the gang territory across the US and anyone wearing gang colors should be shot on site.
Then, after that, the cops can start shooting everyone who drives a Corvette, because some Corvette drives drive way too fast and sometimes cause fatal accidents.