FLU: While I find NPR generally left-leaning (the way FOX is right-leaning), I didn’t see anything in her remarks, including the word “racist”, that rose to the level of a terminable offense. If you read the transcript from the “sting” (which really wasn’t a sting, at all), she was merely expressing her opinion.
However, in the culture of umbrage we live in, everyone gets pissed off about something.
Back in 2007, a white staffer in DC was fired for using the word “niggardly”, which means miserly. However, in a city that’s 60% black, this was quickly read as racism. It wasn’t, of course, but he was forced to resign anyway. http://www.adversity.net/special/niggardly.htm