The death penalty shouldn't come back.
What we need as a society is:
a) a real deterrent for crime - proper hard time, it's all to soft
b) law enforcement with real powers and able to deal with crimes quickly and properly
c) kids taught proper respect for others so that they don't steal, abuse, harm or kill others.
d) parents need to be able to teach their kids right from wrong
e) kids need to have role models and aspirations to grow up and be a good citizen
So really it all starts with parents/guardians bringing up their kids, educating them and doing all they can to help them become a good part of society. But that will only work for the current kids, there are too many who are already trouble makers and for them we need a) and b).
See this article about how important good parenting is to society:
http://www.bbc.co.uk/news/uk-14403919Yes I am a parent, but even if one of my kids was a victim of serious crime, I still wouldn't want the death penalty.