What difference does it make at this point whether Nixon had an affair?
And I think it's ludicrous to compare Nixon to Hitler. Whatever Nixon's shortcomings, he had a number of high-minded goals, and there can be no comparison of him to one of the most evil men in history.
As angus always says, there is no such thing as good and evil.
They are merely perceptions.
Well every person has some conception of what is good and what isn't and that conception can usually trace its roots back to something that is the same for everyone.