I'm confused. Antifa is a terrorist organization. The federal government got absurd power against terrorists after 911.

Why aren't we using it?

It's my understanding that these terrorists don't need to be read Miranda rights or even charged with anything. They did this to innocent Americans like Susan Lindauer. Why aren't they doing it to terrorists on American soil threatening American lives?

It doesn't matter what the local governments do. The feds have the power to act against terrorists.