Not sure why downvoted. While I object to "everything I don't like is racist" bullshit, this one is actually true--unions are not only xenophibic, by misogynistic. The union my Dad was a member of bragged about how it ran women out, usually via overt sexual harassment.
Everyone thinks unions are some great system but they suck in actual practice. The absolutely suck--it's just more egos and personalities in the way of you making a living. The best thing about tech is the low barriers to entry--that is populist, not unions. If you are good you succeed, if you are not good, you become an architect or a manager or leave.