Fonda began the march to protest the lack of action by big corporations and the government to combat climate change.
“We have to act,” one of them said. “It's not even really a choice.”
HUMANO is a multimedia project that aims to help people better understand the immigration process.
The team found that pro-vaccine advertisements on Facebook came from a wider variety of sources than anti-vaccination.
UMD students and staff were among the crowd.
Monarch butterflies adorned signs and pins as protesters cheered, chanted and danced through 40 degree weather.
The list included 25 state and local lawmakers.
More students have been involved in sexual assault prevention events in recent years, they said.
He had represented Maryland's 7th congressional district since 1996.
“I don’t see any other way to get the facts,” he said.