I wonder what’s going on??

So I was watching this remotely via my CCTV.

I haven’t a clue what is going on or what they are there in response to.

I DO KNOW 1 THING THOUGH:

IT HAS NOTHING TO DO WITH ME 

I CAN ONLY IMAGINE WHAT PEOPLE MUST BE THINKING IF THEY PASS BY & SEE ALL THESE POLICE CARS OUTSIDE MY VAN!