In this task you will be given a claim and a perspective. You should determine whether that perspective supports or undermines the claim. If the perspective could possibly convince someone with different view, it is supporting, otherwise it is undermining.

claim: We should allow death penalty for the worst of the worst criminals.
 perspective: The death penalty can produce irreversible miscarriages of justice.
undermine

claim: Gay marriage should be legal.
 perspective: Legalizing gay marriage is a stepping stone toward disgusting and harmful marriage practices such as incestuous, bestial and child marriages. 
undermine

claim: The world should go vegan.
 perspective: People who eat meat are not harming the environment. 

undermine