I am sure that's true but I've met (and some are my relatives)many who have had no issues with other races or even with LGBT. The YOUNGER people (under 40 at the time) in my family had major issues with having an LGBT in the family while their own parents (my aunts mostly and all over 60) had no issues whatsoever.
My grandfather (actually both grandfathers...) never had an issue with blacks- interacted, friends but he did use the old, now inappropriate term. Never in a malicious manner though. For him that was the term of the day when he was growing up (in the North). And if I recall I believe he did change his habits as well (with a slip up here and there). I do wonder though how all 4 grandparents would have reacted to today's news both on the Charleston shootings (and flag issue) and the gay marriage ruling (all of them passed away before 2001).