From your post it seems that the main problem is that the courses you're complaining about are, well, besmirch is a too strong word, but somehow create bad image for Perl in your country. IANAL and am completely guessing here, but if this information can be "caught on tape", can a court case be built around it, with the intent of stopping spreading false information? And if yes, possibly TPF/EFF will be interested in stepping in, and your first step will be seeking advice from something radical as Slashdot?

I'm a peaceful person myself, but (I guess) am good at logical reasoning, and this step seems to be a logical answer to someone bigger than you, attacking something dear to you, Perl in this case. If anyone comes with a better and less radical suggestion, I'd be first to support it, but until then, well... si vis pacem, para bellum?