Speaking to The Guardian in 2015, Graham Nash said, “There’s only one line in one song that I wish I hadn’t written, in Chicago [1969]. We were pretty blitzed. The line, “Regulations – who needs them?” We need regulations. You’re not allowed to drive through a red light. There are certain societal rules that we have to live by. So I sing it differently now. I say: “Some of those regulations – who needs them?”'

Some of the lyrics refer to the “Chicago 7” trial, where protesters at the convention were charged with intent to incite a riot:

“Though your brother’s bound and gagged
And they’ve chained him to a chair
Won’t you please come to Chicago
Just to sing”

This refers to Bobby Seale, the only black plaintiff and the eighth member, who was actually gagged and bound to a chair in the courtroom. He was later removed from the trial, leaving seven. The three most famous names from this trial are Tom Hayden, Abbie Hoffman and Jerry Rubin.