You should write on an unsettled question that interests you enough to keep your interest for a long time. If you don’t have a clue what this is, then I recommend you do some literature review. Research is not done in a vacuum. Once you know what conversations people are having, then you can see where your perspective can make a valuable contribution.

One thing not being mentioned here is that people were tired of establishment politicians who don’t change anything. So many people voted for Obama hoping for change, but then said “fuck it” and voted for Trump.