I don't understand what you're getting at. Do you think I want union organizers to be fired from their jobs or murdered? I was simply pointing out that your argument is a cheap dig that could also be applied to pot smokers and MLK. People who disagree with you will see it as such and remain unconvinced by your arguments.
If you want to convince people, you have to figure out what would change their minds, not just hector them. Otherwise you're just wasting everyone's time.
Maybe by presenting examples of hidden and public corporate disregard for law in their pursuit of profit. If you don't like the idea of a law as an absolute, maybe the same examples, framed as being against the public good. I want sunion organizers negotiated with, not fired OR murdered. If you're willing to overlook hidden events as "improbable" and public events as "not that bad" I don't really know what would convince such a person.
If you want to convince people, you have to figure out what would change their minds, not just hector them. Otherwise you're just wasting everyone's time.