And the most who chanted the "Allahu Akbar" along with Takfir or other Islamic Groups were the "Khawarijeen" who declared Ali and all others to be Kafirs and thus made war against them Halal, and also made Halal to kill any normal Muslim who didn't agree with them.
And we also hear here Taliban who are saying "Allahu Akbar" while slaughtering the innocent people.
Brother,
you heard the chanting of "Allahu Akbar" by this FSA .... but why are you unable to see the US and France and Israel's support and supply of weapons to this same Allahu Akbar chanting FSA?
Why are you unable to see that FSA is not going to negotiation table and for reforms due to the orders of their Western Masters and they just want destruction and only destruction.