Canada

For example, a “women’s only” group may be for a group of women who are healing from a sexually violent relationship, so they really don’t want to see men there.

"Maybe that whites-only parenting group could be healing from some trauma caused by POC and they don't really want to see POC there."

Do you see the problem? A POC causing you trauma is not a good reason to reject POC people in general, and a man causing you trauma isn't a good reason to reject men in general either.

A group dedicated to victims of domestic violence could easily encompass both men and women who have suffered from it, whether the perpetrators were men or women. Cis & trans, it bears saying.

A person who has a blanket phobia of people of a particular gender or ethnicity needs therapy to address their sexism/racism. "I don't feel safe around men" has the exact same energy as "I don't feel safe around black people".