The Fight Club star has signed an online petition from non-profit organisation Sandy Hook Promise, pledging to honour the 20 children and six staffmembers gunned down at Newtown's Sandy Hook Elementary School by encouraging and participating in conversations about how to make schools and communities a safer place as legislators discuss how to tackle the growing numbers of gun-related crimes and murders across the country.
Posting a link to the page on his Twitter.com blog on Monday (14Jan13), he writes, "I'm joining people in Newtown in making the sandyhookpromise to protect our children & reduce gun violence. Join us at http://www.sandyhookpromise.org."
Norton's rallying call comes just a day before U.S. Vice President Joe Biden is due to present his proposals for comprehensive gun violence legislation to President Barack Obama on Tuesday (15Jan13).
The actor isn't the only celebrity to speak out about the need for gun reform - Beyonce, Jennifer Aniston, Cameron Diaz, Reese Witherspoon and Gwyneth Paltrow are among the stars who recorded a special video message for Demand a Plan, a new movement which seeks to ban the sale of assault weapons, among other things.
The Newtown massacre is the latest tragedy to rock America in recent years, following shootings at Colorado's Columbine High School in 1999, Virginia Polytechnic Institute and State University in 2007, and a movie theatre in Aurora, Colorado in July (12).