The city made it impossible for Baltimore PD to work. If a cop accidentally injures a black person while on the job, his or her career and life can end. The chances of this happening in a city like Baltimore are so high as to be inevitable. Even resistance to restraint that causes injury can be counted as intentional injury. Unfortunately for the city's residents, the cops didn't like the risk factor and gave up.
Good luck looking for logic from China's forum for American libtards