Respect vs Disrespect
Summary: Blaming shifting is never a good idea; those with less are playing a game that is linked to childhood education.
For everyone else, a healthy psychology education on boundaries and parameters will sign off on pretty much everything required to move forward. Starting young, basic functions in life can expand to a higher level of perception of the self and others because not everyone respects each other; it might be about them rather than you me and the situation.
Watch out for projection and if you mirror it back what they do, they won’t see who’s really in the mirror. Get back to the priority that matters in the right environment. Their childhood is not your childhood or your genetic precursor.