As Reuters observed, angry Iraq protesters are changing anti-American slogans as they fill up Tahrir square in the center of the capital: "Demonstrators gathering at Tahrir square in response to calls by an assortment of militia groups known collectively as the Popular Mobilisation Forces (PMF), which are mostly backed and trained by Iran, waved the Iraqi flag and chanted anti-American slogans such as 'America is the Great Satan'".