I guess NYPD's way around people that don't make their profiles fully public.
It would be interesting if Facebook is willing to punish/ban/etc not just the companies directly doing this, but their clients as well.
It isn't just the NYPD that does this, it's advertisers, data mining companies, financial institutions, employers, nation-states, ex's, stalkers, etc.
It's cheap and easy to do, so why wouldn't organizations mine that data that have the resources to do so?
The best thing you can do is to delete your profiles on these services.
I urge a visit to the Stasi museum in Berlin.