From what I've heard, the actual proposals are not to get rid of police departments and salaries etc. but to take some of what is spent on extra patrolling, weapons, and jails and redirect it toward crime-prevention initiatives. Still not a good idea because it stems from the Utopian idea that crime is just a symptom of fixable injustice caused by bad policy rather than a symptom of the human condition. Looking at it with such a lens treats criminals like the victims of crime, and the crime as lack of socialism (which is ALWAYS ultimately the answer for today's Utopians). Where there is freedom, justice and rational decision-making, deterrence is prevention. If the duly voted on and enacted law (not arbitrary order) says, say, that shoplifters will be prosecuted, then the prosecution of shoplifters prevents crime. It isn't the job of the store or the larger society to make it so that people don't feel like shoplifting or to give them something to do besides steal things. But regardless of the idea's merits or lack thereof, I don't think Defund the Police means simply not having police departments.