One early memory I have is of a second grade classmate (I still remember his name, which alas is just common enough that it is hard to Google him up) who moved back to Minnesota with his northern "white" parents after spending his early years in Alabama. He told me frightening stories about Ku Klux Klan violence to black people (the polite term in those days was "Negroes"), including killing babies, and I was very upset to hear about that kind of terrorism happening in the United States. He made me aware of a society in which people didn't all treat one another with decency and human compassion, unlike the only kind of society I was initially aware of from growing up where I did. So I followed subsequent news about the civil rights movement, including the activities of Martin Luther King, Jr. up to his assassination, with great interest.
It happens that I had a fifth-grade teacher, a typically pale, tall, and blonde Norwegian-American, who was a civil rights activist and who spent her summers in the south as a freedom rider. She used to tell our class about how she had to modify her car (by removing the dome light and adding a locking gas cap) so that Klan snipers couldn't shoot her as she opened her car door at night or put foreign substances into her gas tank. She has been a civil rights activist all her life, and when I Googled her a few years ago and regained acquaintance with her, I was not at all surprised to find that she is a member of the civil rights commission of the town where I grew up.
One day in fifth grade we had a guest speaker in our class, a young man who was then studying at St. Olaf College through the A Better Chance (ABC) affirmative action program. (To me, the term "affirmative action" still means active recruitment of underrepresented minority students, as it did in those days, and I have always thought that such programs are a very good idea, as some people have family connections to selective colleges, but many other people don't.) During that school year (1968-1969), there was a current controversy in the United States about whether the term "Negro" or "Afro-American" or "black" was most polite. So a girl in my class asked our visitor, "What do you want to be called, 'black' or 'Afro-American'?" His answer was, "I'd rather be called Henry." Henry's answer to my classmate's innocent question really got me thinking.
It's quite disappointing to me that there are still as many Americans as there are who classify their fellow human beings into Procrustean beds of "race" categories, especially now that it is known that human races have essentially nil biological significance. But it is progress that the United States has elected a President who has traceable African ancestry and "black" appearance. My late father said back in the 1990s, when Colin Powell was mulling a run for President, that it would be a good idea for America to elect a black president to begin to get over this issue. Even after Obama's election, I still saw ridiculous commentary such as the statement that Obama is the first President not of northern European ancestry--completely neglecting his ancestry through his mother, Ann Dunham. Maybe someday we will get used to the idea of viewing our fellow human beings as our fellow human beings, period, but I'm appalled that it is taking so long.