Jerry Rubin was pushed to the front as a clown to discredit the anti-war movement because senior officials were worried the ideas were becoming too mainstream.
The same things are happening right now with 9-11. Notice the media only allows airtime to guys who also claim we never landed on the moon and Nazis did.
It doesn't actually take all that much brains to play this good cop/bad cop game. I'm sure if you'll think carefully you will remember someone in your workplace who has done this almost unconsciously in tandem with another person in order to get their agenda accepted. Governments only do it on a broader scale.