That's really sad. It's parents like this that ruin kids fun. I feel bad for the kid that got hurt... but it seems like the parents/kid were being safe while trick or treating.
I - Black Mountain Side
II - Moby Dick
III - Hats Off To Roy Harper
IV - The Battle Of Evermore
HOTH - D'yer Mak'er
PG - Night Flight
Presence - Candy Store Rock
ITTOD - All My Love
Coda - Bonzo's Montreux