Someone who served 25 years in prison for murder might murder again, but is less likely to than he was if you just left him alone 25 years ago. The chance is not extremely low, there is a real risk, but its both lower and much less immediate than the chance that an active shooter will kill someone.
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Mullane said she was able to determine that 988 convicted murderers were released from prisons in California over a 20 year period. Out of those 988, she said 1 percent were arrested for new crimes, and 10 percent were arrested for violating parole. She found none of the 988 were rearrested for murder, and none went back to prison over the 20 year period she examined. cbsnews.com
That number might be lower for CA over 20 years then it is over the country as a whole for even longer periods, but its the only data I found about the rate of murdering again for convicted murders, and it is for the US's largest state over 20 years.
Apparently murder has a low recidivism rate, esp if you mean committing murder again. Part of the reason for this is that some murders are crimes of passion in an extreme situation that might not repeat again. While property crimes might be the way someone supported themselves. Yes serial killers exist, but most people, even most murderers, don't make a lifestyle out of it.
Another reason is that if your convicted for murder your likely to go away for some time. You've aged and changed in those years. A first time conviction for theft might get you a prison sentence, but its unlikely to be a big percentage of your life. Your less likely to dramatically change during your sentence. |