These phrases, "hate speech" and "anti-Semite", are well-worn devices to shut up a critic of Israel without having to answer the criticisms. Indeed they have been used so much that they have become red warning flags that the person using those phrases has something to hide and needs to shut down the discussion by any means possible. By screaming "hate speech" or "anti-Semite", Israel's supporters hope to shut down the debate without actually examining the issues involved.