Ok, the term Racial Discrimination is also used to refer to discrimination based on cultural, national, ethnic grounds as well as colour or race. Islam would potentially come under the Cultural definition of such a claim, however it also could overlap with national, ethnic and racial criteria given the predominance of Islam within specific racial, ethnic and national groups. For example a law banning Sikhs from wearing their turbans would potentially be racial discrimination as Sikhism, although a religion, is also defined by its cultural affectations. Islam, in fact many religions are also defined by the inherent position such religion plays within the cultural and ethnic background of the individual and groups that practice it. It depends upon the nature of the discrimination itself and how it is defined as to whether it can be categorized as racial or religious discrimination and there is significant overlapping which in turn has led to a broadening of the term 'Racial Discrimination' in common usage. It pretty pointless basing a counter argument based on the definition, it's superficial at best.
The story in the Daily Mail, as well as being a silly decision by an overzealous headmistress, isn't really racial discrimination as the choice to attend a museum alone cannot be objectively defined by the fact that the non-attendance is due to a prejudice...it may well be simply because the child doesn't want to go, or the family cannot afford the travel fees incurred...crazy decision that only creates more division and prejudice, not the opposite.
