Republicans hate governments and unions because they are powerful bodies accountable to the people, and that gets in the way of complete hegemony of corporations. When they say that governments and unions are too powerful, what they're really saying is, corporations aren't powerful enough. They hold up flaws in governments and unions as proof that they must be marginalized, but never make the same point about corporations. They paint those groups as thugs, hoping that you don't notice that their side has even less accountability.
Make no mistake: the GOP isn't about curbing so-called "thuggery"— it wants the monopoly on it.