I am a little confused, there are TT tables set up for public use. It is a public park. So what is wrong that has warrant the NYPD's intervention? I cannot comprehend.
It actually is not a public park. It is a private park. Bryant Park is a private park. I think, if you want to film in the park, you need to get permission from the park director's office. If you want to put up banners to advertise in the park, same. I am not 100%. But I think that is the deal. And that is also why the police directed them to a public park that has tables.
If you notice, those are not the standard tables that you see outdoors at public parks where the table is there and it is not maintained or anything. These tables are actually maintained on a DAILY basis by the park employees. They have equipment (rackets and balls) for people who don't have their own to use. They have a park attendant who monitors the tables from 10am-6pm to insure that people rotate on the tables fairly and everyone gets equal time playing. If you sign up and play, you are given 10 minutes on the table and the park attendant will tell you when your time is up.
I think the park attendant let that go on for quite a while and then decided they needed help from the director who probably asked the police to move TTD and Ping Pod on. It looks to me like they got a tiny bit more than 10 min on that table.
So, in fairness, the police were polite and the park attendant let it go for quite some time.
Perhaps it was at a time when things were slower at the park so they could let it go for longer.