Bands like Savages and Yeah Yeah Yeahs are content with using signs and sloganeering to command the crowd’s attention. Elias Bender Rønnenfelt — of visiting Scandinavian punk outfit Iceage — demanded it more aggressively. Shortly into the quartet’s first song of the June 8 show, the waifish Rønnenfelt took a break from his barking and stage-stalking to give a swift boot to the hands of a person in the front row who was engrossed in his cell phone. Message sent: silence yourself. crowbarlive.com, aestheticized.com/