I was involved with unions practicaly all my life off and on between army service. so I know how they work, inside and out.
A few years ago, I help decertify my wifes union, which I can't name for obvious reasons. That was not a very easy thing to do. They are corrupt and powerful. We were getting death threats from the international office, real mafia Jmmy Hoffa style stuff. One guy literaly had the nerve to phone and tell me that he was coming to blow my head off.
It took alot of work, but finally we were successful. It was further complicated because the union was in bed with the management of the place. Quite a currupt little arangement.