Harold Meyerson discusses the "peace" movement in the WaPo's "No One to Demonize". I'm only going to discuss this bit:

...Confronted with a choice between U.S. occupation and chaos, millions of Americans -- chiefly liberals and Democrats -- who'd been against the war decided to give occupation a chance...

Actually, they thought we were going to be spectacularly successful, and they decided to back away slowly. Of course, the Communists far-lefties continued their protests no matter what.