“One Hat Radio” is an internet based radio channel which offers a talk forum concerning politics, racial issues, human rights and related human interest matters. One hat was conceived by music producer and social activist, Mark Carman. in 2015 Carman became involved in public efforts related to Gun Control and other social issues by releasing an internet video that garnered more than 1.5 million views in the first week of publication. As part of that effort, Carman founded an activist group, the American Coalition for Responsible Gun Ownership, and made several contributory appearances on national news programs including CNN and CBC News and others, addressing firearms legislation in the United States. Carman's efforts drove the acquisition of more than 1,000,000 signatures on a petition, delivered to Senator Chuck Schumer urging President Barack Obama to use executive order to address some of the issues pertaining to firearms legislation. In January 2016, Carman was invited to the White House to participate in the announcement of President Obama's executive action on Gun Control.
In 2012 Carman was awarded the President's Call to Service Award (also referred to the President's Lifetime Achievement Award). The Call to Service Award is the most prestigious President's Volunteer Service Award. It has been awarded to only a few Americans for extraordinary service. In 2016 Carman was awarded the President's Volunteer Service Award, Gold level, for his volunteer efforts involving public service to orphaned children and homeless adults.