Ah, you see, I beg to differ. It is about discrimination and prejudice of ANY kind, and why would anyone who believes in the tooth fairy be called "stupid"? If a person believed in the tooth fairy you would call them stupid, whether they were English or not?
Equality - Everyone is treated equally, has a right to fair outcomes and no one receives unearned advantage because of who or what they are.
The Commission for Racial Equality incorporates the Race Relations Act 1976 and The Equality Act 2006 which encompass race, ethnicity and religious beliefs.
http://www.cre.gov.uk/downloads/CRE-Corporate- plan-2006-2009.pdf