It is like saying you find it disgusting to see both Hitler and Hitchcock and Hemmingway in the same list of people whose last names starts with an H. They simply do. It has nothing to do with your opinion of the people, so asking them to be removed from the quiz is very odd.
And coming from the point of view that some of these individuals might be "disgusting" wouldnt you think that hiding away the people that did bad things, like it never happened/excisted is a good thing? If anything that would be more "disgusting"
These people excisted, they were leaders, some were good others werent. Ignoring the truth and hiding away the bad things that happened in the past is never a good thing.