Surveillance footage released by the FDNY on Sunday shows the moment a suspected arsonist chucked a Molotov cocktail into a Brooklyn deli on Saturday. Joel Mangal, 38, allegedly carried out the fiery attack at NR Rock Deli in Bedford-Stuyvesant after he got into an argument there with staff.. ..Footage from outside the deli shows the suspect igniting one of the incendiary devices before tossing it through the front door.... Mangal allegedly tried to throw a second Molotov cocktail into the deli, but was stopped by a witness... [video at link]