Amir Khan has been defeated by Danny Garcia in Las Vegas.
Referee Kenny Bayless stopped the fight for the light-welterweight title in the fourth-round after a series of heavy blows by Garcia.
The 24-year-old American paid tribute to his family in his post-victory speech.
More top news
The violence began after a counter-protester allegedly doused a female rally organiser with pepper spray.
As temperatures climb through the day, the warmest spots are likely to be across western parts of Northern Ireland and western Scotland.
Boris Johnson and Amber Rudd have both criticised social media giants for failing to detect and remove extremist material online.