As a libertarian, I find both Progressivism and Fascism disgusting and counter to the goal of liberty. But unions? They are a creature of those movements, and as we have seen recently, are co-conspirators in a form of crony-capitalism that allows statists to stay in power by passing laws that increase the power of unions, thereby giving the unions more money to support the statists, etc. etc.
Its the evil reality of it all.