In defense of Adria Richards and call-out culture claims this is a valid example: "I once took, and tweeted, a photograph of a man who sat down in my row and began masturbating during the rape scenes in The Girl With a Dragon Tattoo. I did it because I was repulsed, horrified, and angry, and most of all because I wanted him to stop. And, on some level, because I was afraid he would hurt me. Call-out culture, I believe, helped me make it impossible for him to do so."
I don't know if the writer is lying to herself, but if you're afraid of someone in a movie theater, you don't call attention to yourself by taking a picture. You find an usher or the manager. Maybe you take a picture as proof, then find someone with the power to get the person kicked out or arrested. But if your idea of an empowering action never leaves the internet, your empowerment is as real as what happens in World of Warcraft.
But then, maybe call-out culture is a game called World of Social Justice Warcraft.
There's a lot of discussion about call-out culture on the web. I especially recommend a post at MetaFilter: privilege-checking and call-out culture, which starts by citing Liberal bullying: Privilege-checking and semantics-scolding as internet sport.
I found an insider's criticism of call-out culture at Tiger Beatdown, a site hosted by Sady Doyle, one of the gender feminists who decided Julian Assange doesn't need a trial to be declared guilty. From Flavia Dzodan's Come one, come all! Feminist and Social Justice blogging as performance and bloodshed:
Call out culture, a phenomenon that casual readers might not even notice, is to me, the most toxic aspect of blogging. Not because it is set to correct wrongs and engage in meaningful ways to actually enact change. No, call out culture is toxic because it has developed as a tool to legitimize aggression and rhetoric violence....I disagree with Dzodan's understanding of bullying: bullying is usually done for an audience, to entertain the bully's friends and terrify those who might be the bully's next victim. So, yes, call-out culture is a rationalization of bullying, just as lynchings and witch-huntings were rationalizations of murder.
Call out culture might, at times, dangerously resemble bullying. However, it is not exactly the same. It certainly shares its outcome, however, unlike bullying, call out culture is part of the performative aspect of blogging. Unlike bullying, a call out is intended for an audience.
ETA: A similar, but even sillier, example of outrage over perceived sexism: PHPness Gate – raising interesting issues