A serial community-builder in Central Brooklyn, Mark has worn an astonishing number of hats. He began organizing Bed-Stuy and Crown Heights residents back in the ‘80s. In the ‘90s he built a community credit union for low-income residents. In 2009 he ran for City Council. And in 2011, Mark co-founded the Brooklyn Movement Center, a Black-led community organizing group where he, until recently, served as E.D.

These days, he is re-imagining citizen story-telling through Brooklyn Deep, a digital journalism platform with a stake in the future of New Yorkers. Long-term residents tell stories and publish investigative news, analysis and data, chronicling neighborhood change and bringing transparency to the exercise of institutional power. Brooklyn Deep has also spun off an award-winning documentary podcast, School Colors, which Mark executive produces. 

School Colors follows generations of parents and educators fighting for self-determination while navigating issues of race, class and community change. The first season focuses on a school district in Central Brooklyn. The second season, which was picked up by NPR and premiered on Code Switch, is set in Queens.

In everything he does, Mark dedicates himself to creating high-quality, deeply reported journalism by and about communities often overlooked by other newsrooms. Mark is a Board Member of The City NY, a Visiting Assistant Professor at the Pratt Institution School of Architecture, and the Co Executive Director of Free Speech TV.