The Power of the Individual

The Crucible: john proctor- he changed society because he was going to let his wife pay for his mistakes because he wanted to make it seem like he lived a perfect life, but in the end he decided to let it be known and he got hanged.  

The Night Thoreau Spent in jail: Henry David Thoreau- He changed society because he didn't have the same beliefs as everybody else and he was willing to go to jail for what he believes in.

The Adventures of Huckleberry Finn: Huck changed society because he helped a "runaway slave" when nobody else would and he grew as a person throughout the whole book.