Back in the very early fifties, My dad drove truck for a block company. Back then they used to load and unload the blocks by hand, so my dad was quite fit. Well, around then the teamsters union was trying to get into the company. My dad and one other driver were the only hold outs left. So. one day, when my dad and the other driver had stopped at the local diner for a coffee break, the teamsters sent a little "muscle" to persuade them to join the union. When it was all over, my dad and the other driver continued on their delivery and the four teamsters goons were on their way to the hospital. After that, the teamsters left them alone, and my dad never joined the union. A couple of years after that he quit and started selling cars.