@jym626 The site is free but does require registration, unfortunately. And AFAIK, it doesn’t spam.
On the issue itself, there’s clearly some insensitivity involved on both sides. Whatever language they use, students should have kept their voices down near professors’ offices. The former director should have just put out a sign in the lounge asking anyone there not to talk in loud voices and I’m sure these students would have complied. It’s just an etiquette issue, at least originally. Etiquette varies from culture to culture.
Email itself clearly shows insensitivity, and perhaps some bias, but I wouldn’t call it racism without further evidences. The actions of the other two professors, if they were true (I’m not convinced that they weren’t made up), are certainly more troubling.