Coldplay began their set on Glastonbury Festival's Pyramid Stage by broadcasting Charlie Chaplin's speech from The Great Dictator.
The words to the 1940 speech include: "I should like to help everyone - if possible - Jew, Gentile - black man - white. We all want to help one another.
"Human beings are like that. We want to live by each other's happiness - not by each other's misery."
The band then came bouncing on to the stage, seguing straight into singing A Head Full Of Dreams and launching fireworks and confetti.
Frontman Chris Martin said: "Oh, it's our favourite place in the world."
Coldplay then took the audience back to 2000, playing one of their best-known songs, Yellow.
Chris said the audience had restored his "faith in the world".
He said: "Well good evening everybody, thank you so much for waiting through three days of rain and mud and sticking around. That means the world to us.
"We came here a little bit scared about the state of the world, but the vibe at Glastonbury makes me feel like people are great and together we can do wonderful, wonderful things.
"Thank you for restoring my faith in the world and we're going to give it everything we can tonight for you."
The band then launched into Every Teardrop Is A Waterfall.
As Chris sang the lyric "still I raise the flag", he unfurled a flag reading "love".
After performing in 2002, 2005 and 2011, Coldplay are now the only band ever to headline the festival four times.