At anything that the most hostile interpretation possible could somehow construe as racism/sexism.
And basically, anything can be construed as racism/sexism given some of the current definitions.
Sitting peacefully on your couch minding your own business is racism, according to Kendi/diAngelo.
Treating women equally and not achieving perfect equality of outcome is sexism. Treating men and women differently in order the achieve equality of outcome: also sexism.
Leaving women to make their own choices, which may not exactly match men's, is sexism.
Giving women candid feedback is so sexism. Not giving women candid feedback: also sexism.