It's hard to beleive this is even real. I understand agnosticism, and atheism but the absence of a beleif system doesn't feel particularly motivating.
For starters, “treat others well because everyone deserves our empathy” is completely compatible with atheism.
Of course the actual people doing harassment, exploitation and violence are just dark triad personality types
for everyone else the standard advise applies: BE ANGRY [at sin—at immorality, at injustice, at ungodly behavior], YET DO NOT SIN; do not let your anger [cause you shame, nor allow it to] last until the sun goes down.