Animal rights activist Aidan Cook was removed by security moments after rushing the stage at MoveOn's Big Ideas Forum.
The former vice president's rivals pounced on his consensus-seeking agenda at the state Democratic convention.
The probe may not even deliver the formal, public investigation activists are likely hoping for.
MoveOn has quarreled with Clinton for years. But fear of a Trump presidency can heal those wounds.
Into macramé? Want to practice your Japanese? Finding others with common interests has never been so easy.
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Sanders' team plans to fight for superdelegates even if Hillary Clinton wins the popular vote.
A progressive supergroup is asking the U.S. what kind of country it wants to be.
In contrast, nearly all the major labor unions have backed Hillary Clinton.
The vehicle will be going around New York City to raise awareness.