Is Arcade Fire’s request for showgoers to wear formal attire over the line? The band isn’t the first to issue a concert dress code, but can it ever be OK? Hate to say we told you so, but the tide of public opinion has been turning against the indie rock juggernaut. Wait, now we’re the assholes. Embracing that, maybe we should all plan to go to Arcade Fire’s show at Comcast Center on Aug. 19, 2014, dressed in flip-flops and Hawaiian shirts. That’ll learn ’em good.