He packed the crackers to the stuffed doll with ten hanging faces reflecting the ten evil qualities that human possess -anger,hatred,jealousy,lust,violence,injustice,greed,suppression,madness,desire.
He drags the doll to the roof at night with the casket of 3 matches, that he stole from the pujaghar in the morning. He quietly sneaks and then enters the roof. He rubs the matchstick against the phosphorus strip and sets the doll to fire. The red glow and green fumes that glittered from the crackers shined in his eyes and brought a large smile on his face,bigger than the rainbow did. Maybe he enjoyed violence over nature.