A pox on both their houses! At least in many cases, the union "leaders" are no better than the managers. Quite litteraly in that they no longer "do" they just "manage" and take as much for themselves as they can. Not true in all cases, either union or management, but in way too many of them.
Unions were formed to protect labor from the robber barons. Now the unions are being robbed by their own management. If one speaks of unions as a totality, many have no use for them and rightly so, however to disparage all the members is equally unjust.