There are going to be competing protest rallies there. the Antiwar types are protesting on Saturday (with GOE counterdemonstrations as well), and the Amnesty crowd are protesting Sunday.
Here are the mainstream media priorities:
Anti-war event: 12 Reporters on scene - 75 cameras (from all angles)
Amnesty event: 10 Reporters on scene - 60 cameras (from at least 3/4 of all available angles)
Anti-Obamacare event: All reporters and cameras being used at the above events — unavailable for MSM coverage.