When I was a kid we used to have 'Sambo's pancake house or something.  There was a set of tiles around the ceiling with the story of 'Little Black Sambo' and how he ran around some lions so fast he made a ring of butter.  Something like that.  The chain changed their name to something else.  Dunno if they were outside the Pacific Northwest or not.

I certainly don't long for the good old days, and I think it is good taste to re-name an unfortunately named establishments, but the politically correct stuff is all kinds of amusing to poke fun at.  I personally would patronize a 'honkies' or 'crackers' or 'Thai-food-Mary's or order a 'mad cow burger' without hesitation because I find the stuff wildly funny.  I probably would avoid something that had name which was derogatory to minorities (unless I was in that minority) just in case the owners actually meant it.  Similarly, I avoid buying things which I know the owners are either racist, or worse in my opinion, actively exploit people.  I pay attention to this, at least slightly, when buying shoes for instance.

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Actually I just read up on Sambo's on Wikipedia.  They change Little Black Sambo from an African to an Indian (India Indian that is...benefits by clarification to Northwestern US natives of a certain age as 'Indian' is how we referred to Native Americans who actually did exist in the population.)  Nice try.  It didn't work...they apparently didn't anticipate the influx of people from the Indian subcontinent and more or less folded.  The building we mostly went to did change to something else.  Maybe Denny's.