Gang of Four are grumpy old Marxists and proud of it. The anti-capitalist punk funk of their 1979 classic Entertainment! has influenced generations of bands (from Mission of Burma to Franz Ferdinand), but their outlook remains bitter. Their first album of new material in 16 years shoots scorn at a variety of atrocities — Internet narcissism, Gitmo, expense accounts, sex and lies — while setting Andy Gill and Jon King's vocal cross talk to viscose guitar scraping and rigid, bracing rhythms. Yet where Gang of Four's earlier work rode on a thrilling push-pull tension, Content either pummels your eardrums or just slogs along. It's anti-capitalist mainly because you won't enjoy owning it.