"Of Mice and Men" by Gorge Orwell.

George and Lennie are two men, who share a dream; that one day they may buy a home of their own. There Lennie will be able to take care of the rabbits. Although Lennie has the body of a man, he has the mind of a child. The two men arrive on a ranch near the town of Soledad, where they are about to start work as barley buckers. On arriving there, they meet Candy, …

…the story, he takes Carlson's gun from his pocket, and at the end of the story his story, he pulls the trigger and kills Lennie. When the other men arrive they are amazed that George managed to get the gun from Lennie and then shoot him with it, except Carlson who immediately understands what really happened and offers George consolation. The two friends walk off together in sorrow, mourning the loss of their mutual friend.