Arguable instance:
The death penalty is an effective deterrent to crime.
Supporting details:
1. Studies have found that states with the death penalty have lower murder rates than those without.
2. In 2016, states with the death penalty had an average murder rate of 4.6 per 100,000 people compared to 5.2 per 100,000 in states without the death penalty.
3. Between 2000 and 2015, states without the death penalty saw a larger increase in their murder rate than states with the death penalty.