Birmingham police Officer Stephen Doss helped a Gate City boy with his broken bicycle chain.

Not everything in a cop's day is violence and anger and pain.

Sometimes you -- and the cops themselves -- just have to smile.

On Monday, Birmingham police Officer Stephen Doss was in the city's Gate City public housing community carrying out an operation with the department's Neighborhood Enforcement Team, to which he is assigned.

Doss came upon a young boy with a broken bicycle chain. "Not only did the kid get his bike fixed, but the attention and affection the kid received from the officers meant the world to him,'' said Birmingham police spokesman Lt. Sean Edwards. "As you can see, the officer did not mind his head being rubbed by the little guy."

Edwards said the question has always been asked, why did you become a police officer? "Overwhelmingly, the answer has been and continues to be, to help people,'' he said. "Who knows, this small gesture of fixing this kid's bike could have a long-lasting impression that changes the projection of his life. Wow! The best job in the whole world."

Birmingham police Chief A.C. Roper said the video is funny, but also touching. "That simple act speaks to a sense of friendship and trust,'' the chief said, "and that's the essence of community policing."