How does Piggy generates the most pity and concern during the lord of the flies?I know he was bullied and ignored but I couldn't find the...

Piggy generates the most compassion other than Simon
because he tries so hard to make things workout for the better.  The poor boy steps out
of his comfort zone to try and keep things civilized. 

Even
Ralph who becomes Piggy's friend later, in the beginning, feels that Piggy is a fat
bore. (page 65)

Jack and his hunters had been trying to
catch a pig but had failed.  Jack was already angry when Piggy said something.  Jack
turned on Piggy and attacked him.

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"He took a step and able at last to hit someone,
stuck his fist into Piggy's
stomach."(71)

Jack and his
boys attack Piggy and Ralph and steal Piggy's glasses.  Piggy tells Ralph and the others
what had been taken and the problem that it has now created for him.  Without his
glasses he is virtually blind.

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"That's them," said Piggy.  "They blinded
me."(169)

Piggy and Ralph
went to get Piggy's glasses back.  When they got to Jack's encampment Piggy tried to use
the shell to demonstrate that he needed to be the one to talk.  The boys mocked
him.

"The
booing rose and died again as Piggy lifted the white, magic
shell."(180)

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"That's them," said Piggy.  "They blinded
me."(169)

Roger launches a
rock that causes Piggy to fall downward against a rock and be
killed. 

"The
rock stuck Piggy a glancing blow from chin to
knee;"(181)