Don’t forget that the instructions ask you to discuss and give your opinion. Where is your opinion? You have only done half of what is asked. You must not ignore the instructions. Your opinion must go in the introduction, the body and conclusion.
Also, I wouldn’t recommend using the “Holocaust” as an example of why people shouldn’t study history. It’s a very poor example. The Holocaust is a reason why people should learn history. I rarely comment on the type of examples given but I think you need to plan more carefully.
Also try to present equally well developed ideas which means keep your paragraphs more balanced.
All the best
Many Americans, perhaps most, hate to see their national and civilizational heritage coming under attack, with those who speak up in its behalf running the risk of being labeled Nazis or racists. They don’t understand why they can’t talk about America as part of the West, with its distinctive attributes and accomplishments and legacy, like their grandparents did and those who came before. And because of the calumny it unleashes when they speak up, many of them keep quiet about it; but many of them also quietly voted for Donald Trump last November in part because of this societal cleavage.