Or a few RING Cameras.
The Ring cameras would be blocked with black spray paint the day they were installed. Nobody stopped all the leftists in 2020 from tearing down our historic statues, spray painting many with red paint, putting graffiti on statues. Mere cameras won’t stop them.
They will be absolutely livid with rage and want to tear down the garden. The only thing that will stop them is armed guards with shoot-to-kill orders. (well, maybe hickory shampoos applied before shooting them would do).