Akhi that is too true, people tend intermingle the deen with their culture! Islaam is a DEEN, NOT A RELIGION, AND IT IS A WAY OF LIFE! Yes, it's good to know your culture and be proud of it, but at the end of the day, we're one Ummah.
Basically, when I was referring to corrupting values, I was referring to how, for instance, in the United States, there are some Muslims who embracing things which are totally un-Islamic. That is what I mean by corrupt. Of course, people who come from Arabic and South Asian cultures bring with them baggage which has nothing to do with Islam, but so do many Americans who convert to Islam.