You claim that what is happening is that every time a story than happens to involve a Black person or a woman is posted, people post comments about race/gender

You claim that what is happening is that every time a story than happens to involve a Black person or a woman is posted, people post comments about race/gender to derail the discussion. What is actually happening is that every time a story promoting progressive views on race/gender (this story explicitly mentions gender), people post to disagree with the message of the story.