Preventing tenants from damaging my video recording cameras

[Bobby Narinov]

I had some break-ins in my apartment complex so I installed 8 cameras around the apartment complex. None of the tenants objected before the video equipment was installed.
But after the installation one of them didn't like the placement of one of the cameras (because it was capturing the path going to her apartment) so they are constantly hitting the camera with a long stick until it starts pointing to the roof.

What can I do to make them stop messing up with the cameras. I am getting tired of that cat-and-mouse game: they are moving the camera and then I have to hire someone to fix it back. Any Ideas even the stupid ones are acceptable.