Went like this.
Me: Too bad about the few at the capital who did bad things. Probably agitators.
Him: Yeah I kind of agree. But I just wish it never got to this point. The racist stuff Trump says doesn't help.
Me: Oh yeah... er I mean, well what racist stuff exactly?
Him: Well you know just all that stuff.
Me: No I can't think of anything... can you give me a specific example?
Him:....
Me: I need a specific example. I really want to know what he said because if he did that's terrible!
Him: well I can't think of anything right now but yeah...
Me: Can I tell you about Charlottesville?
Ask questions.
Be friendly.
Be understanding.
Ask questions.
Show the truth.
Let the person realize the truth on his own.
Ask questions.
Remember these lines when talking with a person like this. Don't be pushy.
Not you, just in general. You did a FANTASTIC job. More people should be like you