I believe the Feds have already defined what groups they consider to be “extremist”—Christians, TEA Party, Pro 2nd Amendment, Veterans, Preppers, etc...
What worries me is that they say they will develop cases for those that “MAY” resort to violence due to political reasons, etc... Are they going to start rounding people up for their political associations or beliefs????
We already know the answer to that question, we just don’t want to believe it.