> Music is no longer a social movement. Back in the day being a fan of the Clash went far beyond music you were joining a social/political movement, something you believed in. Katy Perry might sing a catchy tune but its all about her personal ego

I don't think the Clash ever had the kind of mainstream success that someone like Katy Perry has. A more appropriate analogue for "back in the day" would be like Andy Gibb or someone.