Justin Bieber's redemption arc: Is it too late now to say sorry?

q's pop culture panel — Esquire columnist Stephen Marche, Rachel Giese of Chatelaine and Slate music critic Carl Wilson — weighs in on this week's hot button headlines from the world of art and entertainment.

At issue today:

• The artistic response to Paris attacks, and the cultural impact of ISIS. Is this really a clash of civilizations — or should we be wary of framing the story that way? 
• The ethics of outing Charlie Sheen's HIV status. The actor's forced confession raises tricky and uncomfortable questions. 
• Justin Bieber is back with Purpose. As the Canadian megastar transitions from teen pop to adult pop, is he changing his narrative, and raising expectations?