George and Lennie 2 ordinary guys however they are running from a problem that Lennie created from scaring a girl. For example George and Lennie symbolize the average person because they just want to live the American Dream. Therefore The Average person wants the American Dream. The American Dream is owning your own business and being free.
Carlson shoots Candys dog because it was useless and all it did was stink up the bunk house. For example Candys dogs death foreshadows Lennies death because Candy and his dog foils for George and Lennie. As a result Friends should look out for one another because when one friend is in trouble the other friend should help.
Lennie and curleys wife were in the barn and she told Lennie to pet her hair and he would not stop petting her hair because he loves soft things so she got scared and she started to scream then Lennie got mad at her for screaming and he accidently chocked her out and she died. When Lennie kills curleys wife that is the climax of the story because they cant accomplish there dream now because they are running from everyone and cant make money.
George shoots Lennie because he causes to many problems and he was going to die anyways because all of the people were after him. This is the undoing of the dream. The death of lennie is the death of the dream. Therefore " The best laid planes are often the go awry because they sometimes dont go as planned like lennie messing everything up.