By Shannon Watts* As a mother of five, I was devastated by the mass murder of twenty children and six educators at Sandy Hook School nearly four years ago this week. So I started a Facebook page from my kitchen counter in Indiana, which connected me with moms from all over the country who agreed our country must do more to prevent gun violence. Today, Moms Demand Action has a chapter in every state and is the grassroots arm of Everytown for Gun Safety, the largest gun violence prevention …