If you join the KKK you're most definitely racist. Unless somehow you were just feeling lonely and were looking for some friends to hang out with one night, and saw a poster advertising a KKK meeting... and somehow had never heard of the organisation or it's ideals... and then decided to go and join them for some company.
As far as I see it he is racist. We can dance around the issue and make all the convoluted excuses we want but to me a lot of the things says and does has undertones of racism to it. Yes, Mexicans aren't a race... but the majority of Mexicans are hispanic. Yes, Islam is not a race but the majority of muslims are either Arab, asian or black. The common thread here is that his most hardline policies are directed against minorities and if you can't see that then you are in denial. He relies on the fact that his support base is made up of a number right-wing extremists (including active promoters of racism) and uses his minority bashing policies to stir them all up.
So he doesn't share the KKK's views is what people are saying. But the man refuses to denounce them on his own will, is funded by them and probably plays golf with many of them (speculation but I doubt I'm wrong.) In my opinion, any supporter of trump is a supporter of fascism, whether they see it or not.
These are my opinions, not facts. Although I value source lead arguments I also value common sense.