First, disclaimer: I'm not american, and I can't get involved in American affairs, but I firmly believe if any strong social movement came from America, its going to ripple across the global corporate empire.
Hence why I'm posting this.
You guys HAVE TO mobilise
You can post about shitty bosses, anti-worker media articles, low wages, corrupt politicians all you want, but you won't achieve much without action.
Create parties, organize meetings, push an agenda, protest bad policies, make online groups. Be. Active.
Edit: Unions are a start, but are not enough. They can just help the employees of one company at worst and one industry at best.
If you need something on a national scale, you need more than just individual unions