Why the hell do we release these people?
Check it out:

U.S. officials suspect a former Guantanamo Bay detainee played a role in the attack on the American compound in Benghazi, Libya, and are planning to designate the group he leads as a foreign terrorism organization, according to officials with the plans.

Militiamen under the command of Abu Sufian bin Qumu, the leader of Ansar al-Sharia in the Libyan city of Darnah, participated in the attack that killed U.S. Ambassador J. Christopher Stevens and three other Americans, U.S. officials said.

Witnesses have told American officials that Qumu’s men were in Benghazi before the attack took place on Sept. 11, 2012, according to the officials. It’s unclear if they where there as part of a preplanned attack or out of happenstance. The drive from Darnah to Benghazi is several hours