Twitter's decision to ban Kanye West raises interesting issues about freedom of speech. Since both Twitter and West are private citizens, the First Amendment is not directly implicated, but its spirit cannot be ignored. Let's begin with an indisputable fact: Ye (the former Kanye West) is a virulent antisemite who has called for "death con3" against the Jewish people. He has made other antisemitic statements as well. The image that got him banned juxtaposes the star of David, a symbol of Judaism for millennia, with the Nazi swastika, the symbol of Hitler's murder of 6 million Jews. West claims that...