Which brings us to the first consequence. That what you write has an effect. If you write something racially offensive then those you have offended will be less likely to participate. The hostile environment to which you have contributed will also become, by definition, a limited and limiting one. What you end up with is a community, where people are excluded because of who they are that then shrinks to a fetid ecosystem including only people who are just like you.
This is a great piece by Gary Younge. I am only quoting a short paragraph because I wanted to copy/paste the whole thing.
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