How do Americans generally perceive Britain?

With the heavy influx of immigrants from the four corners of the earth, the rising crime rate and the fact that London as a city is barely 50% white British any more I thought that the American myth of Britain being a homogenous, immigrant free, prim and proper, rural country of little country villages with friendly vicars and church spires had been firmly put to rest.

Admittedly, I haven't spoken to many Americans about this topic, but of the 70% I have, most of them have held the view of Britain that is a very homogenous society of low crime rates, low immigration, high reverence in the royal family, have the lowest crime rates in Europe, are patriotic and in some cases are very religious.

As a British person, this image of Britain being a conservative, low-crime, homogenous country just doesn't sit with me. We're one of the most multicultural countries in Europe - even in the smallest towns in the UK people of races other than white are visibly represented and in the bigger cities they often number more than whites - and I'm not even getting onto the fact there's quite possibly getting on for a million Eastern Europeans living in the UK.

As for low crime rates, statisics often suggest we have some of the highest crime rates in Europe, which is quite plausible, there's some nasty bits of work in the UK. Patriotism and reverence for the royal family is long gone, quite often there have been cases of being putting a flag out on their house only for the local council to request it's removal. Flags create a massive stur in the UK, there is the constant fear they will offtend foreigers and upset the multi-cultural balance. As for the royal family, they are of no consequence to the UK anymore, you've got to remember even countries like Sweden and Holland have royal families.

As for religion, if you find a less religious country, let me know.