It's based on the way white entertainers historically blacked up to poke fun at what was seen at the time as an inferior race. See the black and white minstrel shown. This has meant that the act of blacking up has taking on racist undertones and has become very offensive.
It's based on the way white entertainers historically blacked up to poke fun at what was seen at the time as an inferior race. See the black and white minstrel shown. This has meant that the act of blacking up has taking on racist undertones and has become very offensive.