Well, according to the logic present in this very thread, some people have tried organizing, but they haven't single handedly stopped fascism, ergo organizing labor is useless, just like voting. There's nothing we can do that doesn't require a large amount of people to organize and invest time, effort and money. Of all the options, voting is (because of laws) still the cheapest, most legal, least likely to get you fired option. And we can't even manage that.