Nobody is using violence to stop workers from buying, renting, or building means of production. Buy your own example, violence only comes into play when they try to steal.

The only real violence you mentioned is if police attack striking workers, which is exceedingly rare in most developed countries with the rule of law. What percentage of striking workers do you think are physically harmed by police in the us? If you think that is a likely or common outcome, we are probably living in different realities. You say that laws just favor the workers, but I wouldn't want to be a worker in a society without property rights. There is no point in working if any value you create can be stolen with impunity.