If you’re unwilling to allow the police to detain young black and brown men for being young black and brown men then you make “our city a more dangerous place.”
And if you’re unwilling to allow the state to confine men away from any human contact for years at a time, then you apparently want convicts “to restore their ability to terrorize fellow prisoners, prison staff and communities throughout California.”
An open society needs effective enforcement of the law and allows that those who break the law be separated from society.
There must be some way to accomplish both without disregarding the rights of the free members of that society or disregarding the humanity of its imprisoned members.
Those who believe we cannot? You got it: fear-mongering authoritarian rat-bastards.