Your impression is wrong.
I'm not sure what you mean by "it" but I don't take your beliefs or anything in this thread as a personal attack. I don't even take Trump's corruption and wrecking-ball behavior as a personal attack -- we're nothing to him -- so it can't be personal. I don't even think anyone other than the less than 10% of his base who are actually white nationalists intend to make the country more bigoted.
So, your impression is wrong.
Yes, basically I think you do have something to be ashamed of because you support Trump, and I understand you don't share my view. I even think my saintly stepmother would be squeamish about some of the things she is implicitly supporting when she supports Trump -- if I were willing to talk with her about it -- but I am not, because she is dear to me and I don't want to distress her. Maybe in ten years you and I will still be forum acquaintances and we can have a chat about whether you're proud to have supported Trump, or whether your version of your past support will have a lot of asterisks on it, a lot of qualifiers explaining how it wasn't actually him and his ignorance, destructiveness, corruption, hate-mongering rhetoric, etc. which you supported, but some other goal you had which you felt he presented the best chance of helping achieve in spite of his extreme abuses.