After Putin critic Alexei Navalny mysteriously died in a Russian prison, activist and iconic singer Bono encouraged the crowd at Saturday’s show to remember him.

‘Apparently, Putin would never, ever say [Navalny’s] name. So I thought tonight, the people who believe in freedom must say his name. Not just remember it, but say it,’  Bono told the crowd at the Sphere show on Saturday.

Then he led the crowd in chanting ‘Alexei Navalny.’

Let’s keep his name alive.