There's a recording from the 80s where he makes the same point in the middle of reciting the poem. It's a really good version.
"A lot of times people see battles and skirmishes on TV and they say 'Ah-ha! The revolution is being televised!' Nah. The results of the revolution are being televised. The first revolution is when you change your mind, about how you look at things, and see that there might be another way to look at it that you have not been shown. What you see later on is the results of that, but the revolution, that change that takes place, will not be televised."