I understand that US justice system is completely biased against minorities (Mainly blacks) but i can't completely come to terms with total abolition of death penalty as expressed by many here on HN. Here are few incidents where i think death penalty can be justified (examples are from Norway which has abolished death penalty & India where it is very rarely carried out - only 5 from 1995)

https://en.wikipedia.org/wiki/2011_Norway_attacks

https://en.wikipedia.org/wiki/2012_Delhi_gang_rape

https://en.wikipedia.org/wiki/Ajmal_Kasab

https://en.wikipedia.org/wiki/Masood_Azhar (Got released after a hijacking and founded JeM)