Again, the false narrative that most of these folks, until recently, had jobs and were our neighbors; and that rent increases forced them onto the streets (not just east of 82nd with a crappy bus commute to work).  
The mayor's office is squarely to blame for this trashing of our natural areas (which we've pumped literally 10's of millions into over the past 2 decades). They have actively facilitated and permitted, despite claims to the contrary, camping along the Springwater and other natural areas due to pressure from groups like Boots on the Ground and some bizarro line of thinking that if you tolerate a problem, it will go away.