From the office of Sen. Bernie Sanders: NSA: Out of Control:

Starting at 1:45 p.m. ET, call 1-802-862-0697 to ask Sen. Sanders a question about the NSA and civil liberties.

The National Security Agency's surveillance of millions of Americans' telephone and email records will be the topic of a town meeting this weekend in Montpelier, Vt. Can't be there in person? Watch it live here at 1 pm ET Saturday. Bernie invited two national authorities on civil liberties — Georgetown Law Professor David Cole and the National Lawyers Guild's Heidi Boghosian — to speak on government surveillance and corporate attacks on privacy rights. As Bernie has said, "The threat of terrorist attacks against the United States is real and the U.S. government must be vigorous in protecting the American people from possible attacks. I believe, however, that we can accomplish that goal without undermining the constitutional and privacy rights which make us a free society."

You can watch the live stream at the link above and submit questions for Sen. Sanders there as well.