For the person that down-voted me, it is estimated that Mao was responsible for several times as many deaths as Hitler. Estimates range from 40 million all the way to 100 million people.
You don’t have to be a Nazi to point out that ~100 million people dead because of Mao is worse than ~20 million dead because of Hitler.
Unless you value Chinese lives less than the victims of Hitler, it shouldn’t be an issue to see Mao as having been more evil, even though both were very evil.