For me the biggie was:
Marry Poppins “Chimney Sweep Scene” was racist cuz her face was smoot-smudged.
For me that was the USA’s version of the Khymer Rouge’s, “we gotta kill everyone with spectacles cuz ‘eyeglasses = ruling class’”.
Yep, that ranks up there with the “math is racist” mantra we hear from many on the left.