 Complete the following phrase:  The uprising began as an anti-foreign, anti-imperialist, peasant-based movement in northern China, in response to foreign westerners seizing land from locals, concession grabbing, and granting immunity to criminals who converted to Catholicism. The insurgents attacked foreigners, who were building railroads and violating Feng shui, and Christians, who were held responsible for the foreign domination of China. In June 1900, the Boxers entered Peking, and ransacked the area around the Foreign Legations. On 21 June, in response to the Western attack on the Chinese Dagu Forts, Empress Dowager Cixi declared war against all Western powers. Diplomats, foreign civilians, soldiers, and Chinese Christians were besieged during the 