It's an old strategy - demonize the opponents, claim you are running against the most extreme groups of extremists. It's right out of Prof. Richard Hofstadter's
The Paranoid Style in American Politics. This isn't an accident. They tried the same tactic with Rush and the militias back in the 1990s when the Clintons were in the White House. They hype a panic about right-wing extremists and they go looking for them to round up before cameras for show trials.