A man set himself on fire on Friday afternoon near the Lower Manhattan courthouse where jurors were being chosen for the criminal trial of former President Donald J. Trump. The man doused himself with accelerant at around 1:35 p.m. in Collect Pond Park‚ across the street from the courthouse. Onlookers screamed and started to run‚ and soon‚ bright orange flames engulfed the man. It was unclear what motivated his action‚ but he threw leaflets espousing anti-government conspiracy theories into...