أنشئ حسابًا أو سجّل الدخول للانضمام إلى مجتمعك المهني.
- How do they behave? - How do they present themselves? - How can their practice be combated?
I can answer part of your question: you can't let their message go unanswered in response. The best defence is a good offence. Also, you can bury a bad message by having good, positive, or more even-handed critiques above the unhelpful one.
HOW THEY BEHAVE.