I feel like this will be ruined by some form of metagaming, or several gang members unhappy that they've been identified as part of x gang from 1 thing they did so then they get KO'd and maybe lose a mask or something like that. How often would you be able to use these minor permissions? infinitely? once a day? what if you just 10 vs 1'd someone and you all knocked them out one by one... I can see too many loopholes with this.
There are alot of logistics that would need to change to make this work, cool suggestion for gang activity though.