> Why is that relevant? Are you implying that this somehow justifies the gang behavior?
Explaining, not justifying. Gang-like organisations react more forcefully to perceived betrayal (one up from competition) than bog-standard adversarialism.
> Explaining why something happens doesn't go very far proving it doesn't?
Not sure what you're getting at. I'm asking for evidence of someone suing the NYPD in the manner this journalist might be harassed in the manner a cop collecting evidence on other cops was.