Occupy Pennsylvania Avenue?

On the way to work today I discovered that Occupy Wall Street has migrated to DC! Someone on the bus said it was even more 'occupied' a couple of days ago.
Now that it's in DC, I feel like I should probably learn some more about what's going on in the world. The only thing I know about all this occupying stuff is what I learned from Colbert while I was fixing my hair the other day...
:)
--Catie