Humans can't agree on what constitutes hate speech. I mean, there are general sentiments that most reasonable people agree on, but it gets hairy very quickly in

Humans can't agree on what constitutes hate speech. I mean, there are general sentiments that most reasonable people agree on, but it gets hairy very quickly in the details. The real problem here is that by letting an AI decide what is hate speech and what isn't, we're adding a pretense of objectivity to a decision mechanism that is subjective. It adopts the subjective bias of its "teachers", but that is easily hidden from view. Which means that people who are judged unfairly will be less likely to get due process. And of course, this issue generalizes to a much wider range of AI, including application that already exist (think credit ratings as the most basic example). That's a much more real danger of AI than killer robots.