From 55 BC, we have this warning from a Roman Emperior, a warning that spells fear when coupled with M Obama's commentary on her husband's ultimate intentions.

A nation can survive its fools and even the ambitious,  but it cannot survive treason from within.  An enemy at the gates is less formidable for he is known and carries his banners,  openly.  But the traitor moves among those,  within the gate (the gated population) freely,  his sly whispers restling through all the alleys, heard in the very halls of government,  itself.  For the traitor appears not [to be] “traitor,”  he speaks in the accents of his victims – he wears their face and their garments [but] he appeals to baseness that lies deep within the hearts of all men.  He rots the soul of a nation;  he works secretly and unknown in the night to undermine the pillars of a city;  he infects the body politic so that it can no longer resist  -  a murderer is less to be feared  --  a translation of words written by Marcus Tullius  Cicero. 

Couple this with Michelle Obama’s depiction of her radicalized husband: 

 May of 2008,  MICHELLE OBAMA: "Barack knows that we are going to have to make sacrifices; we are going to have to change our conversation; we're going to have to change our traditions, our history; we're going to have to move into a different place as a nation."