Protesters formed 'a human chain' [=they stood next to each other with their arms linked] around the ancient tree to prevent it from being cut down.
In the United States, the President as the commander in chief is at the head of the military 'chain of command'.
I thought he really won the lottery but he was only 'pulling my chain'. [=he was only playing a joke on me]
(..) if you mess with the wolf, you get the fangs. I've hit you twice. What are you going to do now? We surrender! You can chain my body, but you will never chain my... warrior spirit. - Hey, don't forget the little guy. - Did you just call...? - Po, what are you doing? - Trust me. I got a pl... (..)2011 Kung Fu Panda 2