He talked about America and the rock concerts there which hadn't even started in Ireland and were just barely coming to the UK. He saw them as a huge youth movement that was sweeping the nation with change. He said all you could hear at these concerts was the throbbing of the bass, and all you could see was a giant cloud of marijuana smoke.
Here was a country at war having attacked the Vietnamese and everybody at home was getting stoned and I wanted to be there in this land where the monks threw away their watches and the soldiers threw away their medals.