Discuss.

This is an argumentative essay and I will include the rest of the topic you must discuss and argue.
‘While the evidence tells me that the death penalty does little to deter crime, I believe there are some crimes⁠—mass murder, the rape and murder of a child⁠— so heinous, so beyond the pale, that the community is justified in expressing the full measure of its outrage by meting out the ultimate punishment (Barack Obama)’. Discuss.
Please argue in favour of this quote with academic sources; I will also include notes that you must follow and cite as well. I am not sure how many sources you have to include, but I will add that to the instructions once I find out. This essay should be 2000-2500 words and include an introduction, a good thesis, body paragraphs and a conclusion.