It is gonna take some time and the older people are the less likely to change. The average 20 to 40 year old Trumper does have much more of a capacity to evolve and change and some will. Old ideas (conditioning) die with the people that hold them and are replaced by new people with new conditioning.
Think of all those multiracial couples you see in advertising these days and the other kinds of "normalization" and tolerance you are seeing promoted. These people are professional advertisers, branding is creating biases remember, and these people know how to do it. Some people see this "pernicious" influence as a threat, but it is conditioning generations of Americans and normalizing biracial and gay relationships in many commercials. This is but one example of liberal culture eroding the world of shit these MAGATs live in.
It's not like we liberals are standing around play with our dicks, those that have them anyway!