Extrememists can still be extreme without "doing" anything. Their positions and views on issues is what defines whether they're extreme or not. I'm not passing judgement on whether the Congress is extreme or not, just defining the term.
"Those who can make you believe absurdities can make you commit atrocities." Voltaire
There are your fog people & your sun people, he said. I said I wasn't sure which kind I was. He nodded. Fog'll do that to you, he said.