Is it ever a good idea to tell someone the worst things about them? I would say maybe, depends on the context, because talking is always preferable to violence. But there does come a point, when talking is just used to organize violence. So clearly there is a line.
"Tutsi were increasingly viewed with suspicion; Radio Rwanda aired incitement to ethnic hatred and a pogrom was organised on 11 October in a commune in Gisenyi Province, killing 383 Tutsi."