What is the significance of the story of the Ku Klux Klan??
In your opinion, is the story of Ku Klux Klan is foreshodwing the mob or educating Jem and Scout such that the knowledge can be used to aid them in the mob ? or nil?
The presence of the Ku Klux Klan displays to what extent racism ran rampart even among socially "acceptable" circles in the Deep South. The group of men that came to taunt Atticus at the prison could have very well taken Tom Robinson by force and hung him "then and there" without a trial. Such rash comportment, although uncommon, did indeed exist as there were sporadic cases of lynching reported (for which there was no real reprisal). So it's no wonder that Atticus sweat it out when confronted head-on, and it was no small thing for Jem and Scout to refuse to leave to defend their father. Whether they thought about the KKK or not is not said (and nothing really exists outside the story line, being that it is pure fiction), but certainly a general knowledge of its history would be part of the education Atticus had imparted to them.
The jailhouse mob, as seen in the story, is similar in nature to the KKK of this era. They are a group of racist white men, bent on seizing and lynching Tom Robinson, a black man. While these men did not show up in white robes and hoods, their intent was much the same as any other racial supremacy group -- to "take out" the one who is different.
The KKK was present in the south at this point in history, and their mafia-like expediency in killing was well known even among those who were not affiliated with them. Today, they exist only as a radical fringe group, as their numbers have dwindled, and their influence has waned. For more information, please visit the link below: