I don't even know what the big deal is about this. Heck, it could have been a lot easier if DeBlubbio would have just given his wife the $1billion. Or more!
Well the NYPD will need to strategically determine where they need to cut back now that their budget has been reduced by $1 Billion. I would suggest the following steps:
Stop providing police protection for any NY DA's office that refused to prosecute the rioters.
Stop providing police protection in any neighborhood where a politician lives who supported the budget cut.
Focus your resources on the most crime ridden neighborhoods. The wealthy neighborhoods have less crime; if a crime wave develops in wealthy liberal enclaves of the city certainly they will pitch in for increasing the NYPD budget.... otherwise they can hire private security.