The New York City police department said on Saturday the man had been declared dead by staff at an area hospital.
Officials had said earlier the man, who was in his late 30s, was in critical condition.
The New York police department said the man, who they identified as Max Azzarello of St Augustine, Florida, did not appear to be targeting Trump or others involved in the trial.
Witnesses said the man pulled pamphlets out of a backpack and threw them in the air before he doused himself with a liquid and set himself on fire on Friday. One of those pamphlets included references to “evil billionaires” but portions that were visible to a Reuters witness did not mention Trump.
Telling someone their problems aren't real and it's just mental health is a textbook example of patronizing them.
Tell me you know nothing about mental health without telling me you know nothing about mental health.
Mental health problems are absolutely 100% real. It's not "in your head". Depression isn't something you can just walk off. Panic attacks aren't something you can fix by taking a sick day.
To imply that "mental health = not real" is not only destructive, but also incredibly insulting.