John Lilyea has the goods:
So I decided to add my voice to the millions worldwide from here in DC.
I was really surprised that an ad hoc organization put together such a large demonstration in such a short period of time.
More at Gateway Pundit.
UPDATE: Commenter logtar supplies a link to pictures of anti-FARC rallies from around the world. Protest babes abound (albeit some not exactly, um, real.)