Bono leads crowds chanting 'Alexei Navalny' at U2 Las Vegas Sphere residency

Bono honoured late Russian dissident Alexei Navalny at a U2 show at the Las Vegas Sphere. The U2 front man, 63, led the crowd at Saturday's show of the band's residency in chanting Navalny's name following his mysterious death in a Siberian prison.