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]
(..) I'm easy like Sunday morning That's why I'm easy I'm easy like Sunday morning Why in the world would anybody Put chains on me... This is an active scene. Hold all positions. I've paid my dues to make it Everybody wants me to be what they want me to be (..)2017 Baby Driver