(Illegal) drugs destroy families.
So does alcohol, self injury, eating disorders, etc. It is never the addiction/substance's fault. People make bad choices. Most addicts are dumbasses with no self control. You can't put the blame on drugs, but you can put the blame on stupid people who try and run from their problems by abusing a drug or alcohol, and then act like the victim at the end of the day. I think they deserve a second chance at life, but every addict out there, whether they're on drugs or not, has dug their own hole.
On topic: Dumbest thing I've seen in a while. While we all know that 99% of those people in the photos are smoking weed, there really is no way to prove it, and detaining them or testing them just for being in the pictures would probably not hold up anywhere. But whoever said a trespassing charge would hold up was most likely correct. And then from the trespassing charge, anyone questioned could probably be persuaded to admit more or take a drug test.