How is it that the tragedy of names can be averted, if at all?
It’s too late.
When you are at the point in a society where a wilful lie for political ends is the only acceptable truth you either force people to accept that lie and normalise the ethical compromise, or resist the lie which will eventually lead to violence.
First, that if you are involved in any kind of movement or organisation aiming at public popularity, you must be extremely careful with the language you use to describe yourself, and especially extremely careful with your name.
In all the examples you’ve given the groups involved knew exactly what they were doing and did it on purpose. If they were ethical actors you wouldn’t even know their names.
Evil wouldn’t exist if it didn’t work as well as it does.