I think it's important to realize that law enforcement does do a very good job oftentimes of trying to ensure the safety and security of their people. But oftentimes, where they fail is communities of color and in lower socioeconomic status communities where they discriminate against these people.
If we desire a society of peace, then we cannot achieve such a society through violence. If we desire a society without discrimination, then we must not discriminate against anyone in the process of building this society. If we desire a society that is democratic, then democracy must become a means as well as an end.