What extremist groups are providing aid/support to the Obama campaign 
The Muslim American Society (MAS) is an organization with strong ties to the Muslim Brotherhood.
On its website's "Personality Page," the MAS displays a photo and short bio of Barack Hussein Obama along with other prominent Muslims, such as Malcolm X, Saladin and Moqtada al-Sadr.
A 2004 Chicago Tribune investigation revealed that, after a contentious debate, U.S. leaders of the fundamentalist Muslim Brotherhood decided in 1993 to begin calling themselves the Muslim American Society. The Muslim Brotherhood is an international Islamist group that largely operates underground. The Brotherhood's goal is to spread the rule of Islamic law throughout the world. Key Muslim Brotherhood ideologues, including founder Hassan al-Banna, have endorsed violence as a means of doing so.
Today, MAS' leaders admit that the group was founded by the Muslim Brotherhood, but claim that MAS has evolved since then MAS' magazine, The American Muslim provides a snapshot of where MAS really stands on terrorism. The March 2002 issue includes a fatwa endorsing suicide bombings against Israelis, which states that "martyr operations are not suicide and should not be deemed as unjustifiable means of endangering one's life." The fatwa goes on to say that in suicide bombings, "the Muslim sacrifices his own life for the sake of performing a religious duty, which is jihad against the enemy."