There is a fear in the Western world that the increasing number of Muslims in their own countries will in the future cause extreme dissent amongst its citizens and may bring about a clash of civilisation in their own backyard.
There are some who advocate extreme policies of curtailing the freedom of religion in the West because they foresee that Islam is hell bent on destroying their very own political and secular system.
There are some who wish that the influx of Muslims and the increasing growth rate of Muslims in Western countries ought to be reversed.
The increasing number of Muslims and their inevitable increase in political and economic influence can no longer be reversed.
Part of the reason why there is an influx of muslims into the western world is due to past colonisation of Muslim lands. Western states colonised and plundered Muslim lands for hundreds of years and thereafter felt obliged to admit these when the various Muslim nations faced persecution and wars (cf seperation of India/Pakistan..persecution and civil war in North Africa etc)
THis is perhaps a classic case of past misdeeds coming to haunt the West.
And since there is no way of reversing the scenario, the West will just have to learn to adapt with the Muslims increasing in numbers and mixing with the population.
I foresee Muslims will over time, slowly gain the acceptance of non-Muslims, provided the Muslims themselves abandon zealous religious extremism.
This can be attained, provided of course justice could be served in Iraq, Palestine and other Muslim countries trampled by the West for the West's self interests.
This choice is left to the political masters of the West. They hold the key to assuage the increasing disattisfaction of Muslims in the West. There must be an about-turn in Western policies on the Middle east and Muslims countries if they were to avoid the scenario of Muslims in the West becoming more hostile to their own governments.
If this is effected into place, then I foresee Muslims and Non-Muslims living amicably in Western countries and integrating freely in the future.