From Campaign for Liberty's Allison Gibbs:

On September 4th, there will be a political rally in San Francisco, California. This is about the principles of noninterventionism, not partisanship.  It will hopefully bring together people from all sides of the political map to show our government we want no more of this foreign aggression and policing of the world.

In attendance will be Ron Paul, John Dennis, Dennis Kucinich, and Matt Gonzalez.  The rally will be held at the San Francisco Civic Center at 2 PM.