Consider the tedious claims that America has elected a minority President, but that European countries have not done something similar, and therefore are hypocritical in some way or other. This is an argument that only makes sense from an American perspective; Britain, for example, had a Jewish Prime Minister (admittedly one who was utterly assimilated and who, anyway, didn't come from the main Jewish community in Britain. But then Obama did not grow up in the projects or the Delta) as long ago as 1868 and Prime Minister who's first language was not English and who was often subject to ethnic slurs by 1916. How much does that say anyway? As the example of Léon Blum shows, having a leader from a minority group does not necessarily demonstrate great tolerance on the part of the entire electorate.
Also worth noting that in the past half century we have also had an unmarried 'bachelor' and a woman as PM (who interestingly converted from Methodist to CofE as the former was seen as a barrier to her political ambitions back when such things mattered, internally within the party at least)
And of course the leader of the Labour Party is an atheist from a Jewish family who when elected wasn't married to mother of his children (oh the humanity!)
