RACHEL MADDOW (HOST): It does feel like these Facebook groups are, more than anything, driving this phenomenon right now, once those other groups created the demand in the for the first time.
BEN COLLINS (GUEST): Yeah, it's Facebook and Reddit. Facebook has this one group that has over 25,000 members called "Ivermectin MD Team." You would think that there are doctors in there maybe giving some advice, but the commenters are not doctors. They're just random people trying to find the same horse paste as everyone else.