Even if you invoke their rage, you still have to help people see what is right. When they are cooler, perhaps they can see you mean well for everyone. Perhaps even then, they can change their ways and think more responsibly when they are viewed as a public figure. Some people complain about instructors with shady histories that remain in the dark. I say that if an instructor can change, he can do good, whether or not his history is suspect.
People can change if they want to.
Some people may have good intentions to provide good information, and tried to popularize teachings, but failed in protocol. If a person can check his ego and change, they can do much better, and be a better resource in the community. But it's hard. It all begins within you. People are in hell when they have low self-esteem.