I'm not from the US but I find it really ironic that even from the outside it appears the US culture views this phenomenon as normal: the losers (Confederates) highly priced the traditional values (just take a look at the personal position of general Lee), thus those values got denigrated because they got associated with racism, taking along the ability of the winners (Union) keep the memory and gratitude to those who gave their lives for. I actually live in a country torn by a civil war (disputed to this day!) and man, it is tragic. The wounds seem to never really heal, they just reopen along line where the scars used to be at the next big dilemma in society.