I can only state my own case and what I feel is quite simply "fear". Fear that in spite of our security services best efforts we will have a Tunisia atrocity on British soil, possibly London. I know it could happen absolutely anywhere, but we are top of their hit list at present. I can't imagine how it must feel to have your child/wife/husband's corpse come back in body bag after waving them off on holiday when they were very much alive and yes I'd be like the female vicar who lost her daughter as a result of the bombings on the London underground, I wouldn't forgive either. All the marches for hope, peace will not change a committed terrorists intent to maim and destroy. As far as I'm concerned the linking of arms of European leaders after the Charlie Hebdo massacre was posturing, they showed what they would call solidarity but they hadn't lost anyone so it wasn't really their grief. That grief will be forever with the relatives of those killed. Incidentally I thought the cartoons were insensitive and crass and the publishers were foolish to insult Muslims in that way.
I also fear the spread of the caliphate and it's desire to expand their territory. I think what we have we should hold dear. Our society whilst not perfect is better than many places and it's taken us 1000 years to reach the democratic stage we are at now.
Do not call me a little Englander - my grandfather came to live in this country in 1919 heavily accented with a love of garlic and olive oil in a time of Brown Windsor Soup and boiled to b*****y cabbage and set up a business when foreigners were viewed with distrust by some. He was a Roman Catholic and people could be sniffy about that faith. My own father was dark and swarthy and didn't look English, he did tell me he was occasionally called a "wop" at school. I had a foreign mispronounced maiden name which I only off loaded when I married my first husband for another foreign name. Following family traditions my husband wasn't English either he came here as an articled clerk studying to be a chartered accountant. I know, possibly second hand, what it's like to be a foreigner in a strange country. I do know that both my grandfather and my ex husband wanted to be here because they thought it was better than what they left behind.
Atrocities by crazed right wing gunmen such as the one in Norway and the shooting in the church in Charleston are without a doubt as awful as any other. No one could have possibly have foreseen either of those massacres - but ISIS have made it clear they are cranking up their operations and we in the UK are in their sights.
Not all Muslims have been given homes here, some have, including the Emwazi family who produced the delightful Jihadi John lover of sharp knives. Perhaps that's who rosesarered had in mind.