Rolling Stone sales are up 20 percent after the magazine gave rockstar status to suspected Boston Marathon bomber Dzhokhar Tsarnaev on the cover of its August issue, despite numerous retailers vowing a boycott, a circulation source told the New York Post.

As Boston officials, victims and TV pundits blasted the magazine for celebrating the suspect, some retailers, including CVS, 7-11 and Walgreens, pulled the edition from its shelves. …