The Sunlight Foundation and the National Journal are trying to crowdsource the identities of lobbyists:

On May 11, the Senate Judiciary Committee's Antitrust Subcommittee held a hearing on the proposed AT&T and T-Mobile merger. Titled "Is Humpty Dumpty Being Put Back Together Again?" the hearing was concerned with possible antitrust issues, questions of competition, access to wireless service, rising costs and the loss of jobs.

Of course, Washington lobbyists had their own concerns and not surprisingly, the room was packed. In concert with National Journal, we at Sunlight decided to turn the cameras around 180 degrees to see who was watching the hearing. Our hope is that you can help us identify D.C.'s power brokers and assorted lobbyists who have an interest in influencing the Senate's view on the proposed merger.

Something tells me that RayBans and hoodies are going to be popular at Hill meetings in the near future.