The UK suffered the worst outbreak of rioting in over a decade, sparked initially by the murder of three young girls in northwest England before morphing into anti-immigrant and racist violence by far-right groups across the country. Prime Minister Keir Starmer has said rioters will face the “full force of the law,” but the unrest underscores how his Labour Party’s landslide election win masked deep divisions that an extreme political fringe is trying to exploit.