This is the heart of the matter on the page that Jack linked:

"...give the police new powers to arrest and seize the property and vehicles of trespassers who set up unauthorised encampments, in order to protect our communities..."

Let me see. If I were a farmer, and strangers set up their camp on my land without my permission, I'd want to be able to do something about it. Particularly, if, as I have read, they deposit trash and human waste on the site.

Do they or don't they?