You're gonna need a source on any significant numbers of Muslim immigrants demanding Sharia law.
Because, in case you haven't noticed, we don't have it here. So really, it's no more worrying than any other small group of people calling for something. Your argument so far seems to be "if we let in lots of immigrants, they might have different opinions to us and voice those opinions! We can't let that happen!".
There are regular protest of muslims for demanding to submot to their life of live.
also type anti-alcochol protests and anjem choudary on google



