THE CULT‘s Ian Astbury has apologized for saying “all lives matter” during the band’s performance at RBC Bluesfest in Canada.

The phrase, which the singer uttered on Saturday in Ottawa, is considered offensive by some who believe it diminishes the efforts of the Black Lives Matter movement.

According to the Ottawa Citizen, Astbury said “all lives matter” while calling on the next generation to step up in the fight against racism, against ecological destruction and against all manner of societal ills. He railed against “dumbasses with guns” and, possibly referencing the recent spate of gun violence in the U.S., said, “It ain’t a race thing, it’s a people thing.”

Astbury has since taken to Facebook to “sincerely and deeply” apologize for using the phrase, and to say that he supports Black Lives Matter.

He said: “I sincerely and deeply apologize to everyone I offended by using the phrase ‘all lives matter.’ I fully support #‎blacklivesmatter and wished to show my solidarity.

“So disheartened to know that I have offended people of color. Thank you for enlightening me that this phrase is offensive. I shall never use it again.”

He added: “Even if all lives are precious, we must take responsibility at this time to recognise the importance of not marginalising black lives. We can and should focus on this matter now.

“There’s an injustice and inequality that is very real. History has a chance to evolve and minds to open. Be the change. Please speak up.”

Fan-filmed video footage of THE CULT‘s performance at RBC Bluesfest can be seen below.

THE CULT is currently touring Canada, and will support GUNS N’ ROSES on select dates.