If the club owner had any balls then he would have hired some off duty cops to stand around during the show at the door and back of the club.
The more we cowtail to people like this the more they will use illegal scare tactics to impose their will on our society. Everytime this happens and no one gets in trouble more will start doing it.
All of society suffers because of a few that want to ruin everything. Whether it be fags or blacks trying to force themselves into everything, people like this calling in violent threats because they are butthurt, foreigners demanding America conform to them, jews getting pushed out of everything, people using their free speech to try and suppress my free speech and so on.