"Organizing for Action [Yo!], the non-profit group that branched off the Obama campaign, used this week’s Navy Yard shooting to ask supporters for donations in an e-mail. The e-mail asks supporters to “chip in today” after supporters​ sign an online petition to push for more gun-control measures.

“If you’re like me, you heard the news about the 12 Americans who died in D.C.’s Navy Yard shooting — and you had those familiar feelings of grief and frustration,” OFA[y] executive director Jon Carson begins. “As President Obama said, these events are too common. We all stand numb, trying to wrap our minds around another tragedy that breaks our hearts.”