Do you own homework. Levin disparaged Trump and his supporters on his show many times. I recall one particular vile attack while I driving back from an event I attend every October. Uniquely, Levin took great pains to also attack Trump supporters as “pom pom wavers, etc.” Obviously, that’s was way past the primaries and Levin was way out of bounds.
I listen to him everyday. Don’t recall it the way you described.