Examples:
- https://theawarenesscentre.com/passive-aggressive-behaviour-ruin-relationship/
- https://www.verywellmind.com/subtle-bullies-coping-with-passive-aggressive-people-4018517
- https://www.goodtherapy.org/blog/psychpedia/passive-aggression
- https://randifine.com/passive-aggressive-behavior-is-covert-abuse/
- https://collaborativedivorcetexas.com/dealing-passive-aggressive-spouse/