Many studies show that the mere positive image of specific groups of people can combat our hidden bias.

FORBES: Help for Working Mothers : First Let's Kill All the Biases

Luntz often advises American pro-Israel groups about how to improve Israel's image in the world.

CENTERFORSECURITYPOLICY: We are not for sale

It is that image of collective identification and simultaneous anonymity that is appealing to Anonymous and other groups, says Rich Johnston, a commentator on the world of comics.

BBC: V for Vendetta masks: Who's behind them?