@Mogima: Ohohoho, terrorists are probably among the
tamest kind of "hypocrites" in this context. The kind that had the Arabic term for "hypocrite" earn its religious connotation in Islam were those who lived among actual Muslims in Medina and pretended to be like them, but not only did they not practice Islam's tenets whenever they were away from the eyes of true Muslims, they constantly spouted veiled insults towards the Prophet Muhammad (peace be upon him), and actively tried to sabotage Islamic society and even betray it on some occasions to the idol worshippers of Mecca at every possible opportunity out of nothing more than petty malice.
Like, try to imagine an American citizen who in public loudly proclaims that he's the most patriotic of patriots and wears the US flag with pride... but when in the privacy of his home or his preferred clique of associates, he immediately throws the flag down on the ground, spits on it and tramples it with his feet, and sings praises of Vladmir Putin and the Russian Federation as he compiles the latest confidential info that he gathered through his privileged position in the federal government to present to the Russian spy that he is in semi-regular contact with. That's essentially what a "munafiq" is: One of the worst kinds, if not the worst kind of traitor.
The Wikipedia article on the "Munifiqun" in question.