Those who want to establish Islamic law around the world might be a small group, but they are vocal and intimidating and they will do anything to replace your laws with theirs.
This is what Shariah4hindu posted in a press statement, when it was still active:
It includes paying Jizya (as compensation to Muslims who will protect them), not building any temples as Islam prohibits 'bad things', ban on celebrating Diwali, Christmas etc., ban on holding public meetings, wearing different clothes, not raising houses above muslim houses etc.
Europe is pretty much doomed. We need to make sure the same thing doesn't happen in the U.S.