I've given several reasons here (non of them "racist", Joseph)

WAV: you said your concerns are that

trying to have a multiple number of cultures living under the on state law will always cause problems

and that
the resulting loss of local culture will be bad for society

You think it would have been better for England if many of the people of other cultures who have come here in the last 50 years had not done so. Correct?

The OED defines racism as "prejudice and antagonism towards people of other races, especially those felt to be a threat to one's cultural or racial integrity or economic well-being"

You are a racist. If you're unhappy about being called a racist, it's you who needs to change.