You can go back thru history and find some 'stellar' liberals who you probably hold in very high esteem, yet practiced much worse racism, sexism and other 'isms' than 40 year old stories about Trump could turn up.  The great liberal Democrat, FDR,  evicted 'citizens' of Japanese decent from their homes and threw them into concentration camps in the 1940's, depriving them of their constitutional rights.  Did his dad teach him to do that?