I don't think it's fragility to fight against the slightest racist comments. I think it's the way every race should be. Nobody should have to 'endure' racist speech in the news articles they read, that's the goal any race should be striving to achieve. Just because it's not as bad as other hate speech doesn't mean it's not racist.
Why are these off-topic posts in every submission today, did Mozilla sponsor another outreach?