Your expertise in legal matters is about the same as your level of scientific understanding
But there is no need to resort to anonymous slander...
The truth is an absolute defense to slander (or libel), neither of which apply in this case. Both refer to damage of one's character. In your case, and given your past history, I'm rather confident that your character cannot suffer any additional damage.
As for the "anonymous" people I contacted, they requested that I keep their identities confidential primarily to avoid your harassing emails. In fact, a couple of these people told me they were actually scared by the tenor and content of some of your previous messages to them, and considered reporting you to law enforcement.