Homeless Pedro López Camacho is among those who took the cash, and the needle, several times. He survived, but says he saw many others take their final breaths after receiving a shot.
Read more: https://www.dailymail.co.uk/news/article-14241723/mexican-drug-gang-human-test-subjects-fentanyl-crisis.html?ns_mchannel=rss&ns_campaign=1490&ito=1490