Not interfereing with the domestic politics of another nation?
The TEA party protests were and are, very specifically targeted at the taxing and spending policies of the US government in general and the Obama administration in particular.
The Occupy Wall Street protests paint themselves as economic protests, though as Mr. Walensa learned they are actually very political. So he then decided not to attend.
Speaking of foreign interlopers, did you see the Canadian idiot on the statue in the park today demanding that Bloomberg step down?