What is the ethical issue at hand in regards to raising drug prices? Defend Shkreli’s decision to raise prices Critique Shkreli’s decision to raise prices

https://en.wikipedia.org/wiki/Martin_Shkreli
In a document, discuss the following:
What is the ethical issue at hand in regards to raising drug prices?
Defend Shkreli’s decision to raise prices
Critique Shkreli’s decision to raise prices