Good Etiquette does not depend on age or status of an individual in society. It comes from a conscious effort to stay away from immature and shallow perspectives. One should cultivate compassionate feelings to display honest emotions rather than mere exhibitionism of vague and arrogant behaviour. Erosion of honesty and integrity is lessening the compassionate qualities and coercing minds towards unnecessary aggression.
If you honestly wish to criticise, do so with integrity and only to awaken minds to think beyond the rotten system and encourage them to contribute to life in a constructive manner.