Apparently there’s an anti-vaccination rally in Grant Park today. Skepchick is organizing a counter-protest, but I wouldn’t recommend going if you have a compromised immune system.

Update There will be music (They have swastikas on their shoulders / They’re such patriotic soldiers / They’re like a militia in Montana / They’re a government agency in Atlanta / Vaccine gestapo! Vaccine gestapo!).

Update II: Small crowd at Rubellapalooza so far.