please realize that Republicans are about restoration. They are conservative–they want to conserve what has been shown to work. They also believe that some people in the past were very wise and we should be humble enough to be taught by their example.
Leftists, OTOH, are iconoclasts. THEIR knee-jerk reaction is to tear the whole thing down and remake it in their image! They believe that most everyone in the past was a benighted bigot and WE know better. Actually, THEY know better! Naturally, the focus is not on humility, but on narcissism–on the temporal proximity fallacy.
And that is the fundamental difference between those on the Left and those on the Right. Conservatives want to be guided by the past–there was good to be gleaned there; Leftists want destroy and replace the past–there was nothing good there anyway.