I personally believe this won't be a solvable problem, or at least the problem will grow a long tail. One example would be hate groups co-opting the language of the victim group in an intentional manner. Then as the hate group is moderated for their behaviors, the victim group is caught up in the action by intentional user reporting for similar language.
It's a difficult problem to deal with as at least some portion of your userbase will be adversarial and use external signaling and crowd sourced information to cause issues with your moderation system.
https://xkcd.com/1425/
I personally believe this won't be a solvable problem, or at least the problem will grow a long tail. One example would be hate groups co-opting the language of the victim group in an intentional manner. Then as the hate group is moderated for their behaviors, the victim group is caught up in the action by intentional user reporting for similar language.
It's a difficult problem to deal with as at least some portion of your userbase will be adversarial and use external signaling and crowd sourced information to cause issues with your moderation system.