Piggy symbolises innocence, he is fat, asthmatic, wears glasses etc. so is automatically a target.
Jack makes himself look good by picking on the victim
Jack is completely opposite, he symbolises the desent into savagery
Hope this helps :)
Jack
Piggy
Piggy's glasses.
Jack orders the boys to kill Piggy and Ralf.
Piggy is the boy who does not dance at Jack's first feast in "Lord of the Flies." He is not physically capable of dancing due to his asthmatic condition, and he also struggles to keep up with the other boys due to his lack of physical fitness.
To show his power
piggy
Simon retrieved Piggy's spectacles after Jack had knocked them off, when he had smacked Piggy across the head.
In the story "Lord of the Flies", Jack scolds Piggy for speaking out of turn. Jack slaps Piggy across the face, breaking one of the lenses of his glasses.
ralph to piggy
Roger and Maurice are the ones that attack Jack and Piggy because Jack wants Piggy's glasses.
to kill the pig