Just tell the cops they’re trespassing.
Not strong enough. Plus there are complications - there has to be a sign warning trespassers - and that sign could also keep police and fire departments from helping in an emergency..
We have legislatures to WRITE LAWS for citizens - not just to assist large companies with making their profits better. The solution?
Write a new law.
When that's done cops can go in and arrest the squatters. . This is a no brainer,.