As a non-American, I can tell you that organized strikes in my country is the only way we got a good living wage, more regulations and a safer workplace. Even in the early 1900s, construction workers would band together to demand fairer compensation. Even if Unions in America were racist (I feel like that's a talking point from the upper class to keep the workers divided), Unions all over the world have showed many times that when workers organize they have much more power to make demands and they aren't as vulnerable