Los Lobos turns up the beat

You wouldn’t expect to see fans doing the polka at a rock concert, but then again, Los Lobos isn’t just any old rock ‘n’ roll band. So when the East Los Angelenos kicked into a rowdy polka, Latin style, halfway through their sold-out concert Friday night at the Riviera, the fans followed suit by partnering up and actually dancing (rather than body surfing or slam dancing).