Islam isn't a "culture".  It's a faith--a body of spiritual teachings and laws.  So like phlogiston chemists, you're wrong from scratch (apologies to R A H).

As for Shari'a, (1) the burkha IS a cultural tradition and is nowhere mandated in Islamic tenets (Shari'a included), same for chlitorectomies and such "cultural" nonsense which is primarily, BTW, practiced among African Christians, (2) Muslims are the products of MANY cultures, including this one, and (3) are you prepared to discuss Shari'a from a position of knowledge, or only according to what you see on TV?  If the latter, don't bother.