A mystery donor has given the biggest donation so far to Luigi Mangione’s defense fund, inspired by the “quite exceptional” support for the man suspected of gunning down UnitedHealthcare CEO Brian Thompson. The “anonymous giver” gave a staggering $36,500 earlier this week — topping the previous record of $30,000 as the total exploded to over $722,000. The nameless benefactor said he or she was inspired by the huge swelling of support from a wide cross-section of people for the 26-year-old UPenn graduate charged with the shocking murder outside a Manhattan hotel in December.