Big stage exposes Justin Bieber’s limitations: Aidin Vaziri | The first big disappointment of the night was when he put on the Yankees baseball cap after the second song. There it sat on top of Justin Bieber’s head through the rest of his sold-out concert at the Oracle Arena in Oakland on Saturday like a giant black fly on a flat-panel HDTV. It might not mean much to anyone who is over 12 years old, but this was a serious infraction between the young star and his even younger fans. Not only is Bieber’s mop-top the most discussed and desired in all of pop music at the moment, but that stupid hat meant the phalanx of squealing girls that filled the arena were going to get cheated out of witnessing the thing they actually cracked open their piggy banks to see – that famous Bieber hair flip. (Seriously, look it up.) Read more.