Edward Snowden told a crowd of fans Wednesday that the U.S. government's surveillance programs collect more data on Americans than it does on any other country.

"Do you think it's right that the NSA is collecting more information about Americans in America than it is about Russians in Russia?" Snowden said. "Because that's what our systems do. We watch our own people more closely than we watch any other population in the world."

Snowden also took several shots at the National Security Agency and its top officials, and criticized the agency for wearing two contradictory hats of protecting U.S. data and exploiting security flaws to gather intelligence on foreign threats.

"U.S. government policy directed by the NSA ... is now making a choice, a binary choice, between security of our communications and the vulnerability of our communications," Snowden said, suggesting the government was biased toward the latter activity.