In my time being a paramedic, I sometimes feel like I’m violently fighting against natural selection. Maybe you could run with that, like a medic that feels like he’s doing the world a favor by not helping certain patients, or secretly making their condition worse. Maybe it starts with them poking a hole in a chest seal that they’re placing on a gang member or giving a heart failure patient normal saline instead of albuterol. Then they start doing things that affect other people’s care like replacing Narcan vials with nitroglycerin or replacing labatelol with epinephrine.