It's always amusing and ironic when socialists and unions get at each other's throats. This is a good example of why public employees shouldn't be allowed to form unions. It just encourages cronyism and gives too much power to unelected officials. Fire the buggers if they're not doing their jobs. All of them if you have to. That's what Reagan did with the ATC workers.
On the flip side...
I know very little about New York City politics. I do remember hearing on the radio that people were saying that DeBlasio was going to be a problem. Especially on the law and order front. That was back when he was elected. A lot of cops feel that he encouraged anti-police protests which led to the shooting. The man seems to waffle about trying to keep both sides happy. That's not leadership though. If the police are racist, condemn them. If the protesters are violent or inciting violence, condemn them. Man the hell up and lead.