Union supporters??? Ten to one they were union MEMBERS.
Brownshirts - - Omama style.
A similar team of thugs attacked and severely injured the FReeper Physicist in Philadelphia who was protesting the presence of Bubba. The signal to attack was given by a high teamsters union official.
It would seem that part of organizing is the union proclivity to develop intimidation teams that use not only disruption but escalate it to physical violence on command.
We will see the commands given for violence as the summer comes and the situation heats up.
It is best to steer clear of all the union dominated sewers that are the large American cities.