“There was an ugly scene in the House of Commons on Monday when a Conservative member ‘was understood to say’ to a Labour member, ‘Go back to Poland’—and the insulted gentleman very regrettably, but not unnaturally, retorted with a blow. His action was particularly unfortunate in that it may have slightly lessened the resentment felt by the House against the original aggressor. Whether in Parliament or out of it, British public opinion will always express itself, we hope, with peculiar severity in respect of insinuations made against public men on grounds, real or imaginary, of race or religion. This is an un-English practice, and all decent Englishmen should be determined to keep our public life free of it.”
"Not English" (leading article), The Christian World, 7 April 1938, 10. Emphasis added.