I’m not sure. But from personal experience, there are only certain circumstances in which you need a permit. We do a rally each Friday night in Studio City, and never had a permit. Nor do the moonbats across the street.
Here's some threads on the lameness of the Pinkos.
Code Pink Retreats from Walter Reed-Freepers Win! (Week 40 Report at #1352)
Code Pink Leader Has Tantrum at Walter Reed - 01/27/06