Today, people in Newtown are making the #sandyhookpromise to reduce gun violence. Sign the pledge with me at sandyhookpromise.org

— Justin Bieber (@justinbieber) January 18, 2013

President Obama made his #SandyHookPromise today to prevent gun violence, make yours here sandyhookpromise.org

— ashton kutcher (@aplusk) January 16, 2013

Today, people in Newtown are making the #sandyhookpromise to reduce gun violence. Sign the @sandyhook pledge at sandyhookpromise.org

— Chelsea Clinton (@ChelseaClinton) January 18, 2013

Join me + the people in Newtown in honoring the 26 lives lost at Sandy Hook Elementary School: sandyhookpromise.org #SandyHookPromise RT

— Tori Spelling (@torianddean) January 15, 2013

Make the #SandyHookPromise to reduce gun violence & make our communities safe for all our students: sandyhookpromise.org(@sandyhook)

— Maria Shriver (@mariashriver) January 15, 2013

I'm joining people in Newtown making the #sandyhookpromise to protect our children & reduce gun violence. Join us at sandyhookpromise.org

— Deepak Chopra (@DeepakChopra) January 15, 2013

Join me and people in Newtown in making the #sandyhookpromise to reduce gun violence at sandyhookpromise.org

— bella thorne (@bellathorne) January 14, 2013

Today, people in Newtown, CT are making the #sandyhookpromise to reduce gun violence. Sign the pledge with me at sandyhookpromise.org.

— Dr. Phil (@DrPhil) January 14, 2013

I'm joining people in Newtown in making the #sandyhookpromise to protect our children & reduce gun violence. Join us at sandyhookpromise.org

— Edward Norton (@EdwardNorton) January 14, 2013