Well you read about them in the Great Depression, the workers who lead the rest to strike would in fact end up on blacklists. Get blackballed, never get a job anywhere no matter how small a wage they were willing to work for (before minimum wage, well irrelevant), they were known by face (photographs, happened to me) but in the employment situation in America today, it's not to that point of there being blacklists, and besides strikes and unions are not the answer they were then.