The final day of the Hackers on Planet Earth (HOPE) conference in New York celbrated the hacker spirit -- an upbeat finish for an audience still in shock from Saturday's surprise FBI arrest of invited speaker Steve Rambam.

Jello Biafra, former lead singer of iconic punk-rock band the Dead Kennedys and an outspoken speaker on politics, began his keynote speech on Sunday talking about the arrest. Biafra, a speaker at several previous HOPE conferences, remarked that the conference felt more "spook-heavy" than previous ones. "I don't think that's necessarily bad," he said. "I think it's important to come face to face with people who have a lot of power."

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