Complex sentence: On March 18,1926, she and a group of Beijing students held a protest against Duan Qirui's government this lead to them being shot at by the police which killed one protester.
Split into simpler sentences: On March 18,1926, she and a group of Beijing students held a protest against Duan Qirui's government. This led to them being shot at by the police which killed one protester.