A fight broke out on a crowded boardwalk in Brighton Beach, Brooklyn on Thursday afternoon, culminating in gunfire that killed one person and injured four on the hottest day of the year so far. It's unclear what started the fight (apparently, one man hit another with an umbrella just before the shooting broke out) or who two of the victims are (the woman who died and a man in "grave condition" were both wearing bathing suits and not carrying ID), though police apparently have one person in custody. It's hard not to think that the heat was partially responsible—both for bringing huge crowds to the boardwalk, and for fraying nerves and heightening tempers—but, for what it's worth, studies show that hot months have similar crime rates to cold months. [NYDN; image via @Copacabanaa]