The policeman was justified in shooting the criminal in self-defence. 那个警察出于自卫枪击罪犯是正当防卫。
If justifiable defence exceeds the limits of necessity and undue harm is caused, an appropriate amount of civil liability shall be borne. 正当防卫超过必要的限度,造成不应有的损害的,应当承担适当的民事责任。