A person has a sticker for the action "Abolish Prisons" what would the person list as the solution to keep society safe from Offenders?

Without Prisons I wonder what the person would list as the solution to keep society safer from con artists, swindlers, robbers, Extortionists, sexual predators, Murderers, etc. This is a sticker that I saw on a person's car while driving this year.
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