As federal agents continue to do immigration enforcement across the Chicago area, they frequently deploy chemical munitions like tear gas and smoke bombs on protesters. What’s inside these weapons? What are their health effects or environmental impacts? In the Loop hears from Dr. Monica Peek, physician and health disparities researcher and a national board member of Physicians for Human Rights and from Oscar Sanchez, co-executive director, Southeast Environmental Task Force.For a full archive of In the Loop interviews, head over to wbez.org/intheloop.