BBC News – US & Canada

• Mario Cerciello Rega: US students found guilty of killing Italian policeman
  Officer Mario Cerciello Rega was stabbed to death after a drug deal gone wrong in central Rome.
• Facebook's Trump ban upheld by Oversight Board for now
  Facebook's top "court" says the company has six months to justify its permanent ban of Mr Trump.
• Covid: Canada authorises Pfizer vaccine for children aged 12 to 15
  It's the first country to allow the Pfizer jab for this age group.
• US storms: Hail, tornadoes and flash floods wreak havoc
  Days of severe weather has caused extensive damage throughout the southern US.
• George Floyd killer Derek Chauvin asks for new trial
  The white former police officer was found guilty of the murder and manslaughter of George Floyd.