Lots of white, middle class people have demonstrated against the Iraq war, that is now ended and being rebuilt, and it's only right that the people of these countries complain that their countries are invaded, how would you feel if the French suddenly invaded England?
I think the fear is far deeper seated, where you see a person with clothing that doesn't conform with the British tradition, then they are automatically a 'terrorist', not!
Do we all walk round with bowler hats, and that stiff upper lip? no, we are liberal, and accept change. Look at the number of Indian and Chinese, and Italian restaraunts going back to after the war, because of the integration of troops at the time.
People confuse 'illegal immigration', with immigration...but cultures must be migrated together, but home grown laws must exist. If a person isn't allowed to enter a bank wearing a motorcycle helmet, then a person wearing a full headscarf isn't allowed either. If their religion says otherwise, then they must conform to the laws of the country, not their personal religion. The law in their home country allows this, but this is an established law in the UK, and must abide by the law, in the country they are currently in. Some couple were arrested for having a snog in a radical country, if you are out of your culture, abide by the local rules and laws.