There's nothing wrong with unions. As long as there's a way for companies to go bankrupt and re-organize without a union, then there is a proper balance between businesses and unions.
Both businesses and unions need to be on a level playing field. Workers should have the right to associate with each other. However, said unions should not be coercive in nature, and forced upon all workers.
Abuses happen when one entity is above the other. If unions are protected by the government or mandatory funding (such as public unions), then they can have egregious problems. If unions are discouraged to the point of non-existence, then you get the problems that we saw in the late 1800s and early 1900s with worker conditions and the like.
Back from the dead, I'm afraid.
