How is Piggy from Lord of the Flies like Caesar from Julius Caesar?

There are a few similarities between Piggy and Julius Caesar.  While Piggy never held the commanding role held by Caesar, both have a weaker side to them that is displayed within the text.  

Both are singled out by a group, and both are ultimately killed by members of that group.  While members of the respective groups that ultimately killed both Piggy and Caesar likely included people who were not as happy about the prospect of killing them, no one in the group spoke up to prevent the actions.  Both groups, instead, featured people who were malleable and who were open to following the actions and dictates of a manipulative leader (Jack in LOTF; Cassius in Julius Caesar).  Thus, while Piggy and Caesar appear different, they, in fact, have share some important commonalities.  Sadly, they also met the same end by the end of the respective works in which they were featured.