I wonder if we could challenge their 501(c)3 designation
ProPublica is an American nonprofit organization based in New York City. It describes itself as a nonprofit newsroom that produces investigative journalism in the public interest. Wikipedia
Founder: Paul Steiger
Founded: 2007
Headquarters: New York City, NY
Location: Manhattan
Type of business: 501(c)(3)
Key people: Paul Steiger, Herbert Sandler, Stephen Engelberg, Richard Tofel, Robin Fields