Strongly disagree. I have many examples where unions are the political force that is part of the (anti consumer / anti citizen) lobby; even stronger than the company's management sometimes. It's a bit naive to think just because the unions serve employees they are some a force that cares about the common good.

(They also do not always serve employees well. Same as every elected authority does not always do a good job and often invovle a self-serving small circle).