How to write a thesis statement on capital punishment?
It is better to organize your thesis statement in the way that indicates the arguments, that will be further developed in the body paragraphs:
Capital punishment should be abolished because this practice (1), (2), (3).
There is much evidence in support of the statement that capital punishment should be abolished. Therefore, try not to limit yourself to the discussion of the ethics of the practice. Other arguments may be that it is not cost effective; irreversible, which allows for tragic mistakes; causes unnecessary pain to the relatives of the victims.
Here are two great sources you may use to support the arguments:
Von Drehle, David. “The Death of the Death Penalty.” Time, 8 Jun.2015
Horton, Cleighton. “I Put People on Death Row, and I Know It’s Time to End Capital Punishment.” The Salt Lake Tribune, 7 Mar. 2016
You may add your draft thesis here so that we have a look and assess it. Otherwise, send the paper to me so that I point to possible issues and give recommendations.