This entire logic is a continuum fallacy; that is, just because there is crossover on some ideas doesn't mean the two are equivalent.
Both Islam and Christianity both identify Jesus Christ as the Son of the Virgin Mary and identify Christ as the Word of God, but does that mean that all forms of Christianity and all forms of Islam believe in the exact same doctrine?
No, of course not.
It's very clear that Donald Trump and David Duke have completely different ideas, despite there being crossover on certain issues - like the Wall or Freedom of Speech. I could use the same logic with Barack Obama and call him a Communist, a Zionist, a Nazi, a Libertarian, a Socialist Anarchist, and an African Nationalist, because on all of these ideas, there is some point of agreement between Obama and these ideologies. It's obvious, though, that Obama can't be all of these.
Unless you have evidence of Trump being a Clandestine Klansman (there's video footage of him going to a meeting, or documents in which he burned Crosses in front of African American neighborhoods, or he's openly stated that whites shouldn't marry blacks to preserve their heritage), don't make wild accusations about one's own personal beliefs, because when you do so without evidence, you create a toxic political atmosphere that doesn't end up well for anyone. In the past, such wild accusations without evidence have led to "witches" being burnt and McCarthyism.
