It depends on what you disagree with them on. The words like liberal and conservative republican democrat has changed over the years. The really do not have a strong meaning. I find that politics is like football, d and r are just competing times, like redskins and the cowboys. They are just trying to win a game. The presidency is like the Superbowl. I will also say this personally I think terms like racist are overused, and it weakens the word, so when things that are actually racist happens it doesn't seem as bad. For example calling Joe Bidden a racist makes it look like the dems just call everyone they disagree with racist. Thus making it seem like when Trump or anyone else says things like "send them back" not that bad and when people call it offensive it seems like an overreactions.
I will also say that the republican party has historically done things to suppress the black vote. Does that mean every republican is racist? no. The republican party at one point was the party of Lincoln but got corrected by rich people seeking more money.
The democratic party isn't that perfect either but as of lately the republican party is far worse.
I will also say there is more things to be than conservative or liberal. I consider myself more of a libertarian.
Its also important to realize calling someone racist is like calling some lazy or dumb. There a clearly people that are more racist than others, but who/ what exactly is racist and how racist it is is a little more complected. Polices can have consequences that effect a group of people negatively.
Now, if you support Trump, you might me a racist, or just easily manipulated. I really try not to generalize people but it is kinda far with Trump supports, how anyone can listen to him talk for more than 30 secs and think that he should be president is beyond me.