The term "Negro" was in fact par for the course in usage among blacks right up until the end of the civil rights era. It wasn't a slur until the Black Power folks decided it was. At roughly the same time, CORE decided that whites were no longer welcome in their organization, so I guess being VP of my local SCORE chapter when I was seventeen was wasted effort.
Japan may well be the most xenophobic nation in the world, and I say that knowing a good deal about Japan.
When I was studying what is popularly called kung fu in Boston in the early 80s, my best friend from the school was a black kid (only eighteen) named Tracy Banks. We often went into Chinatown to catch kung fu flicks. One time we went into a Chinese restaurant and were served food that wasn't fit for human consumption. Bad enough that the white ghosts had to be served--a white ghost paired up with an even worse black ghost was just too much.
At that school we had white (a fair number of whom were Portuguese), black (including West Indian) and Chinese students, men and women, and somehow we all managed to respect each other in the service of beating the crap out of each other. We were a family--that is the emphasis in Chinese martial arts. You don't respect your elder and younger relatives, and out you go.
My first teacher (different school), who was Toishanese, once invited me and my girlfriend to his home for dinner--a great honor. During the course of the meal, best soy sauce chicken I ever had, he said, "I wouldn't eat in a Szechuan place. You never know what you might be eating." At first we thought he was joking. He wasn't. He was deadly serious.
Last night my sweetie and I watched Standing in the Shadows of Motown, a documentary about the Funk Brothers, the musicians who made it all happen. In one excruciatingly embarrassing moment, Meshell Ndegeocello interrogated Bob Babbitt, who was white and played bass with the band after James Jamerson died (knowing full well that nobody could replace Jamerson), about the fact that Aretha Franklin's back up band was all-white and "from Nashville" (he actually had to clue her in that it was Muscle Shoals). Did he have any feelings about black artists maybe preferring black back up musicians in the aftermath of Martin Luther King's assassination? Babbitt wasn't so much offended as deeply wounded. He could barely speak. He was close to tears, At least she had the decency to say she was sorry. It certainly didn't seem to bother the black members of the band that Babbitt and Joe Messina were white. They all got Equal Opportunity Lousy Treatment when Motown moved to LA without giving them notice.
I'm sorry, I'm no conservative but I'm not going to wring my hands with white American liberal guilt. I don't recall having any racist feelings from reading Dr. Seuss or watching Warner Brothers cartoons, and I will not be labeled a closet racist by anybody without a fight.