Lamar's 'Butterfly' takes off with rap fans

Lamar's 'Butterfly' takes off with rap fans Rapper's chart-topping new album cements that social consciousness has mass appeal. Check out this story on USATODAY.com: http://usat.ly/1CbqNfF The rapper's sprawling, experimental sophomore effort debuted atop the Billboard 200 album chart this week with 324,000 copies sold, according to Nielsen SoundScan - resulting in Lamar's first No.