Learn the term  "taqiyya", the Islamic practice of deception  Telling   falsehoods to infidels to promote Islam is a duty in the Koran.  Muslims don't like to talk about it, and will even say taqiyya doesn't exist when if fact saying such a thing  is itself taqiyya. to deceive you infidels.  That why so much of what Muslims say and do are so hard for western minds to  figure out.