we know what blackface is now, we didn't before.
i am the only white person in my house, the others are African. They were not offended, they don't know of blackface. I'm sure you don't know much of their culture either or what is offensive to them. In an ideal world we would all know everyones culture, but that is just impossible. Even in Africa each different country has their own culture and in those seperate countries each different tribe has their own culture again.
while most people know a fair bit of US history (more than most in the US would know of our history i'm sure), they don't know about the details, not every detail is taught.
Black history is very important for people to know, but it certainly doesn't begin and end in the US, black history goes way way back throughout Africa and i doubt you or many others have much knowledge about black history before slavery.
I agree that it was offensive, but that's because i knew of the "golliwog" insult but not the particular name "blackface" and i think i only know of it because of the Ted Danson shit fest that happened a while ago.
I applaud Harry Connick Jr, he said what he believed without being rude, he was polite and threw in a joke, and explained after the commercial why it was offensive to him. The show gave him that opportunity and he thanked them for it. He found it offensive because he is from the South, it is a huge issue there. but that being said, not everybody knows about blackface and you can't expect everyone to have the knowledge just because you have. do you know all about ancient egypt, the inca's, the dinka and nuer's in sudan, the kikuyu, luo, teso in kenya, the northern ugandan war against the LRA, what is insulting to one is not so for another. Ignorance is not hate, it is just that, ignorance.
We are all guilty of being ignorant of something.