BS. Unions are nothing more than the collective voice of the represented workers. A given union is no more 'evil' per se than the 'evilness' of the employees it represents. Now, of COURSE management will almost always cast unions as the antichrist; They frequently oppose managements tactics and force THEM to work harder to remain competitive.

When you call unions, in general, 'evil' you are simply calling yourself evil, as well as any other union member. The same usually applies to representative governments, but that's another beehive, and I'm out of sticks.