david spent, thank you very much for that. >> you bet. thank you. >> tucker: well, as america's opioid epidemic continues, in some ways worsens, a new feature is coming to a decaying metropolitan near you, it's called a safe injection site. rathergs than help addicts get off drugs, many cities are trying to create publicly funded areas where addicts can shoot drugs intravenously legally. denver just approved one. de blasio would like one in new york, seattle has been fighting to open one for years. the question is will any of these sites, if they're opened, open up anywhere near the homes of the people who want to build them? the answer is, of course, no. what is it like when one opens in your neighborhood?r a radio host joins us tonight. thank you very much for coming on. so this is one of those ideas that's been discussed for many years. it existed mostly in the realm w of the theoretical. what happens when it becomes real?? what's the effect of one of esthese sites? >> the effect is exactly what you probably think it is. it has the capacity to ruin