Canadian singing group The Tenors has apologised after one of its members altered the country's anthem to include the phrase, "all lives matter".
The group was performing at the Major League Baseball All-Star Game in San Diego when the singer went off-script.
Member Remigio Pereira held up a sign that read "all lives matter" while singing O Canada and also changed a lyric of the song to the same phrase.
The group said they were unaware of Mr Remigio 's plans to change the anthem.
The vocal quartet, based in British Columbia, issued an apology on Twitter, saying they were "deeply sorry for the disrespectful and misguided lack of judgment by one member of the group acting as a 'lone wolf' today".
The group added Mr Pereira would not be performing with them until further notice.
The incident inspired a hashtag on Twitter - #lonewolftenor, under which hundreds of Canadians cracked jokes about the mini-scandal.
if this was the American anthem there would be a massive outrage. The conservatives wouldn't know what to say
This. Xtina pissed off the country just by getting confused. Many people hate it when a singer doesn't stick to the exact melody, has too much vibrato, etc.