It is imperative we treat each other well, without slurs, insults and defamation. If someone else attacks, it’s better to just withdraw.
Withdrawing means the attacking party does not benefit any longer from a friendship or allied relationship.
It is simply the most powerful thing a person subjected to an attack can do.
Being kind and compassionate to one another, without manipulation in the realm of person to person relations is the first step in creating a better world for all. It is congruent with the structural changes a social justice activist aims or seeks to elicit.
Critiquing another is fine, but this should not descend into ad hominem attack, and should be cooperative; human reason is a team-sport with no opposition!
Henry Willoughby's Social Justice Blog 