Justin says

Think of the thoroughness of the union mentality (or dementality) necessary for no union members, of several occupations, to see the immorality of preventing disabled veterans from reaching the hospital or to take pains to minimize the effects of their “action.”

Indeed, a mentality is at fault here but it is important to focus on the parties with the faulty mentality who bear direct responsibility for these unacceptable incidents. Commenters Joe Bernstein and RIBorn have identified them.

Joe B: On the other hand the misguided action by the transit workers is impacting people who are disabled as a result of serving this country who also have exactly zero involvement in the labor dispute.
RIBorn: While the state may have no control over the picketers, there should be discipline coming to the bus drivers and police officers.

In point of fact, those veterans would have safely arrived at their destination despite the picketing if another group had simply done their job: the bus drivers and, secondarily, those police officers who came to the scene and failed to abate the situation.
It’s one thing for a group to picket. It’s a completely different, much darker, thing for a second group to make the conscious decision to place the health and well being of disabled or ill veterans behind excessive deference to a particular group’s first amendment expression.
Yes, over the course of two days, everyone realized their mistake. In the case of the bus drivers and police officers who have an official capacity and responsibility, one that specifically involves protecting public citizens and especially veterans, that was two days too long.
There’s a time and a place for solidarity. This clearly was neither. Shame on those bus drivers and police officers for not immediately recognizing that fact and thereby allowing an allegiance to warp their priorities; i.e., to become a mindless mentality.