Earlier quoted context omitted.
I have said this before and will continue to say this: to put an end to this, liberals in the United States need to openly repudiate identity politics progressivism and cancel culture. Former-President Obama has ( https://www.nytimes.com/2019/10/31/us/politics/obama-woke-ca... ); we should too. Please speak up and, more importantly, please vote for old-school liberals instead of progressives.
Politics isn't going to solve this. You could elect an anti-PC theorist like Donald Trump, or an old school liberal like Nancy Pelosi, and this sort of thing would keep happening. The real solution is just awareness. As people see more examples of this sort of thing going wrong they will be more careful about it.
Anyone who thinks this is all purely organic hasn't been paying much attention.