I'm glad the racist humour is dead as well. When such jokes creep up in old shows, I cringe. How such jokes were deemed "funny"... especially in the late-1960s when some shows were progressive and not doing anti-black jokes but would put out either a lot of Polish or Irish jokes (nationality-based stereotype jokes) or anti-Asian jokes, making fun of their appearance. In other words, the writers, actors, an censors either weren't thinking... or using a bizarre form of ironic presentation in hopes the audience would see the incongruity; anti-Asian jokes did become less prevalent after the 1960s as well. Thankfully.
But, it needs to be asked:
What do you mean by "Because, no, it's not just white men."* You're aware that racism and what came with it or as part of it or what stemmed from it wasn't practiced solely by white males, though there were white male slaves as much as there were women and nonwhite slave owners**.
I do find it interesting when people, in general, act as if America is the only country in the world, for that matter. This is somewhat tangential, but it does help demonstrate a tie-in later. Do any other countries exist? Can people work to improve other countries or just their own? Perhaps it is possible to do both? Or neither? One example: Gwalior and Riyadh are far more polluted than Los Angeles, even more so when LA was a smogfest in 1968 and the butt of silly jokes in TV shows. Since pollution is a big problem, how would people propose to fix those cities' respective problems? By charter a big private jet to go there to hold up a giant Greenpeace sign that begs the leader of other countries to something***? Might be greener to send them an email.
The other question that needs to be asked is, "How?", since that one almost never gets brought up.
What is acceptable does get redefined from time to time, yes. Not always for detailed reasons. Not always for any reasons. Not always thinking through the past and present real concerns, or even future theoretical concerns.
* I know it is currently trendy to say "Because, (single or two word descriptor)". Though most people don't even use the proper inflection when saying it and sound stupid as a result and dozens of youtube videos quickly prove that. My fourth-ninth grade English teachers would be livid over how hackneyed the language has been devolved and become since the dark ages, and I'm not the most perspicacious of people... Only loquacious...
** Their smaller numbers don't trivialize the issue, but ignoring them does. Now I'm not exactly the biggest history buff, but considering people like Delphine LaLaurie, William Ellison, and Togbui Ndorkutsu, it's certain that people and regardless of which color they are all need to damn slavery entirely and completely, and in all of its forms, and stop trivializing it to just solely one group that committed it centuries ago while ignoring all the others as if they never were allowed to exist. (I am not aiming that at anybody in particular but on other forums a number of people do have their special glasses on so they only see things one way, "all whitey bad, nobody else ever bad" being what they amount to, is the flavor of Kool-Aid there "Farkleberry", or even "Sharkleberry Fin"?) It was never just white-male->black-male-or-female. Reality has shown it to be a lot more complex, a lot more diverse (ironic, isn't it?), and a lot more cruel. No wonder the pejorative term "regressive" has been coined, as an antithesis to "progressive".
*** That didn't help last time, and it also unintentionally gives the appearance of insulting the country everyone's putting up a big sign in - because surely that suggests said country is incapable of doing it on its own? Though it's, in reality, nowhere near as simplistic as that and nothing exists in a vacuum. But everyone will just blame America and all white people. Why not... It's so much easier... it's as if the only thing that changes is the whole group of people scapegoated. Not even "most", but "whole". Big difference on that in of itself...