And for the most part those muslim that speak against it are practicing Al Taqiyya!!!
I Googled it-it means "dissimulation."
To learn more, go to this link:
http://www.al-islam.org/encyclopedia/chapter6b/1.html
The word "al-Taqiyya" literally means: "Concealing or disguising one's beliefs, convictions, ideas, feelings, opinions, and/or strategies at a time of eminent danger, whether now or later in time, to save oneself from physical and/or mental injury." A one-word translation would be "Dissimulation."
Translate, please.