Any blatant case of racism or sexism is likely to be deleted, the tools for community moderation of seriously offensive content are pretty effective. That is no

Any blatant case of racism or sexism is likely to be deleted, the tools for community moderation of seriously offensive content are pretty effective. That is not necessarily fast enough for the target of the abuse to never see it, but it does make it very unlikely that regular users stumble upon this. Deleted comments are essentially invisible to regular users, and even for deleted answers you have to go and dig to see offensive content.