Taqiyya is the Islamic practice of  deception. It can take the form of telling only half truths (omission) or telling non-believers only what they want to hear (concealment).  Taqiyya is the "Fifth Column of the Islam", to protect Allah, Muhammad and the Koran from skeptics and critics.  It is anathema to all other religions and philosophies. It is hard for non-Muslims to understand that it actually does exist and is used regularly to convince us that we are the problem and they are the hapless victims.   There is mischief behind the burqa and we all know it.