Was George justified in killing Lennie ?

George was justified in killing Lennie. George should of killed him because Lennie was causing to much harm to every one and every thing he touched. Lennie had already an incident in weed, when he touched a women's dress and he had said he rapped her. when Lennie's aunt gave him mice's to pet on and every mice's she gave him he killed.  He had killed a puppy an Curly's wife so he had no chose but to kill him. If George would of not killed him Carlson or Curly would of not gave him a chance an kill him the moment they saw him.