You have to be careful about those safe environments, as they often simply shift the weapons from loudness and brashness to sweet-sounding talk and subtle negative suggestions. It changes the breed of social warrior who wins from the "Conan the Barbarian" type to the "Mean Girls" type, but that doesn't help good ideas. One example of a dysfunctional strategy that only works in safe environments is the technique of subtly poking at someone's emotions until they say something off-limits or use an unacceptable tone of voice. Toxic individuals are always at work, and changing the rules sometimes does nothing better than changing the ruling toxic personality type.