Leftist Rhethoric for Railroad Strike Workers???

So I was listening to the worker recently. And many feel betrayed by the Democrats due to them taking the side of the executives. What's most concerning to me is some are saying this event may cause them to vote for Republicans in the future. It's obvious that Republicans care even less about workers rights, but how do I convince a person on that. Before I used to say that dems were the more "pro-worker" party compared to Republicans anyway. But the recent events in terms of railroad strikes significantly hurts that narrative.