Greenpeace flew its 135-foot-long thermal airship over the National Security Agency's Utah data center on Friday morning, featuring a new slogan, "Illegal Spying Below," painted on a downward pointing arrow.

The stunt was meant to highlight the diversity of groups pushing against the widespread government surveillance that was revealed last year. The environmental group Greenpeace was joined by the Tenth Amendment Center, which pushes for states' rights, and the Electronic Frontier Foundation (EFF).

The blimp advertised a newly launched website, StandAgainstSpying.org, created by a 22-organization array of political, press, and activist groups from across the political spectrum.

Using data from the Sunlight Foundation, the website assigns each member of Congress an A through F grade on how well they've voted to rein in the NSA. US residents can punch in their address to see what grade their representatives and senators get, or they can look at the full scorecard showing all 533 grades.

The EFF also published some aggregated data about the grades, revealing that of the 100 senators and 433 representatives in the database, 241 of them (45 percent) received "A" grades. On the other end, 188 members (35 percent) flunked privacy class and were given "F" grades.

The site is also gathering signatures for an electronic petition urging President Barack Obama to "take immediate steps to end mass spying."

"This coalition gives great hope for the future because it shows that people across the political spectrum can set aside differences to work together for common cause," said Tom Boldin, executive director and founder of the Tenth Amendment Center.

"Rights rise or fall together," added Greenpeace Senior IT Campaigner Gary Cook.

The Bluffdale, Utah data center has been the focus of activists' efforts in the past. Earlier this year, the Tenth Amendment Center started urging states to deny services, including water, to facilities used in domestic spying. Recently released records show the Bluffdale facility has used between 2.8 and 6.2 million gallons of water per month.