 The victorious union workers occupied and governed urban Shanghai except for the international settlements prior to the arrival of the NRA's Eastern Route Army led by Gen. Bai Chongxi and Gen. Li Zongren.After the Nanking Incident, in which foreign concessions in Nanjing were attacked and looted, both the right wing of the Kuomintang and western powers became alarmed by the growth of Communist influence, while the CP continued to organize daily mass student protests and labor strikes, demanding the return of Shanghai international settlements to Chinese control.With Bai's army firmly in control of Shanghai, on April 2 the Central Control Commission of KMT, led by former Chancellor of Peking University Cai Yuanpei, determined that the CPC actions were anti-revolutionary and undermined the national interest of China, and voted unanimously to purge the Communists from the KMT.