Place I used to work for had a lot of union workers who held a strike every decade or so. The goons would do things like drop bowling balls from the overpass onto cars in the parking lot. Guys you saw every working day turned into psychos during strikes. Means they were psychos the whole time.
I don’t know what proportion of union members are evil thugs, but 100% of them are okay with contributing their dues to pay those thugs. A shocking number actively join in the violence against their innocent victims. Unions disgust me.