Mayors Against Illegal Guns Releases First Ad Featuring Newtown Family Members Demanding Political Leaders Pass Commonsense ReformsMore than 120 Events Taking Place Across the Nation – and The White House – to Drive Largest Day of Advocacy in U.S. History to Address Gun Violence; www.DemandAction.org/March28NEW YORK, March 28, 2013 /PRNewswire-USNewswire/ -- Arizonans gathered today in Phoenix and Tucson as part of the National Day to Demand Action to end gun violence as President Obama met with gun violence survivors, law enforcement officials and mothers at the White House to urge Congress to reform U.S. gun laws. Mayors Against Illegal Guns also released the first television ad featuring family members of those killed at Sandy Hook calling on political leaders to support sensible reforms like comprehensive and enforceable background checks. The ad can be viewed here: www.DemandAction.org/Newtown-Families In Phoenix, Maricopa County Board Supervisor Mary Rose Wilcox, Pastor Warren Stewart, Sr., and Pastor Benjamin Thomas, Sr. gathered in Cesar Chavez Plaza while in Tucson, South Tucson Mayor Jennifer Eckstrom, Tucson Mayor Jonathan Rothschild, and gun violence survivors Daniel Hernandez, Jr. and Pam Simon held a press conference. "As a victim of gun violence I know firsthand the dangers of allowing guns to fall into the hands of criminals or people with mental health concerns," said Maricopa County Board Supervisor Mary Rose Wilcox. "Congress must respond and demand action for the American People. One more illegal gun off the street could save a life." The National Day to Demand Action – organized by Mayors Against Illegal Guns in conjunction with Organizing for Action, Americans for Responsible Solutions and other groups – will feature hundreds of mayors, law enforcement officials, faith leaders, gun violence survivors and family members who want Congress to take immediate action to strengthen our background check system and reduce gun violence. The day is expected to be the largest gun violence advocacy event in history and is part of the largest field campaign in U.S. history to address gun violence. The coalition recently announced that it is hiring dozens of organizers and opening campaign offices in ten states, including in Arizona.