You don't know.
What we know is that we've got to stop the crazy left-wingers that want to steal from those of us that nave been working for a living. We also know that the AFL-CIO is in business to sell their product. Richard L. Trumka has ruled the AFL-CIO for over seven years and he keeps his perks/salary/compensation/benifits/retirement/goldenparachute top secret on his private email server. He's also made sure that the AFL-CIO employees are not allowed to unionize so Trumka can shaft them w/o fear of strikes.
--and it's all perfectly legal...
Union leaders are corrupt. Politicians are corrupt. CEO’s of large corporations are corrupt. Pick your poison.