Women rule social media. They dominate Facebook, Pinterest and Instagram, and stand click-to-click with men on Twitter and Tumblr. It’s not all pretty pictures. This is truly the breakout year for driving awareness on women and girls’ issues through hashtag activism. Some have a professional women’s focus — #leanin, #changetheratio. Others focus on empowerment — #girlsrising, #womenshould — or girls in danger — #bringourgirlsback and #wearesilent.

In this special feature, we showcase the truly powerful and innovative campaigns that have spread like wildfire and galvanized hundreds of thousands to join, rally and participate. Read and share your favorites and a any other campaigns we should highlight.