The Billboard Liberation Front, a group of so-called "culture jammers" who, among other acts, alter the wording of billboard advertisements to make a political or anti-corporate message, have hit again. The group has claimed credit for altering an AT&T billboard in San Francisco to protest AT&T's collaboration with the National Security Agency's warrantless wiretapping of Americans' phones and Internet usage.





















The billboard was a bit too late to influence the telecoms, who've announced this past week to continue the surveillance program.

Hat tip: boingboing