A lot of "sane" folks are skeptical of unions. Well well-run unions can certainly have a positive impact, unions also have a long history of protecting incompetent workers at the expense of competent ones, and they are particularly harmful for younger workers. When I was in college, the unions on campus successfully pressured the school to cut back on student hiring because the students typically made less than older workers, which meant less for union dues. A lot of kids on financial aid had a harder time finding work on campus because of this, and work off campus was not plentiful.