I think there is a difference between racist language and racist insults. Racist language was more acceptable back then, by everyone i.e. including non-white people. Some might say people were speaking their true feelings more than being deliberately racist behind someones back, which tends to happen more these days.Some of the posters claiming the 60/70/80s generation weren't racist weren't even alive then. For those of us that were we can remember just how common and acceptable racist language was.
It's interesting that some of the black reactors I watch on youtube are watching Mind Your Language, Love Thy Neighbour, and Rising Damp. Yesterday I was watching some Indian reactors reacting to Goodness Gracious Me.
One thing we hardly see these days is mixed music bands. We used to see them all the time in the 80s and 90s. Hardly any these days. I doubt we'd get a 'Scary Spice' in todays era.
I'd say these days the ethnic group doing the least racist language these days are white people. If you go and talk to some non-white groups and become close to them you'll see the politically correct mind set never reached them, or others who don't speak english.