How do people end up in the streets protesting something? What motivates them to take action, even when that action could lead to their arrest? Last year, Facebook and Twitter played major roles in helping organize street protests during the Arab Spring, to the point where dictators were focused on either blocking the services or using them to spy on protestors. And now, with the recent Trayvon Martin shooting, the backlash against “pink slime” in meat, and the protests against the Susan G. Komen for the Cure, action has spread through social media like never before. Are we at a tipping point for activism fueled by social media? Is it all good or is there a dark side? Vote in our poll, below, and share your thoughts in the comments below.