It's not difficult to change an entire nation ....

the trick is to do it little by little.  Remember the tale of the Hare and the Tortoise. Slow and steady wins the race.  Stealth Jihad is what we are seeing without even knowing it.   Stealth Jihad by Robert Spencer is another book  that should be on your reading list.   Here is a must-read article. 

....Consider how radically changed Western society has already become in comparison to earlier generations. Couple this with the fact that the whole point of the stealth jihad is to operate slowly, eroding Western values chip by chip; that today’s predominant philosophies of postmodernism (“there are no absolute rights or wrongs”) and multiculturalism (“no one way is better than the other”) are especially conducive to the introduction of Muslim mores in society — and “the largest land invasion in human history of foreign Muslim soldiers” may not be necessary.

Just as the old timers of previous generations marvel agape at what is today deemed acceptable (or unacceptable), years from now, you too may well wonder — how did it come to this? Yet such is the way of time: small concessions today lead to great, and often unexpected, changes tomorrow. And such is the way of the stealth jihad