People seem to raise a PC argument when it goes against something they hold dear, even though there may be no justification for it any longer.  
Recently Memphis changed the name of Bedford Forrest Park to a name still under consideration. This is similar to what is being advocated in the NYT piece and same outcry.  However, is there any justification for keeping the name of a park for a man who was a slave trader and under whose watch the massacre of black troops took place at Fort Pillow.  In my opinion, no.  That is hardly PC.  
I guess it all depends whose ox is being gored.