Police in London said they had arrested 21 climate activists by 8am (0700 GMT) on Monday as the Extinction Rebellion protest group launched two weeks of peaceful civil disobedience to call for urgent government action to curb carbon emissions.
Activists block Lambeth Bridge during the Extinction Rebellion protest in London, Britain on Monday.
Reuters reporters in London’s government district of Westminster saw activists block a bridge and several roads as the protests gathered pace.
Reuters