I'm not sure which country you are from but to be honest, the "all humans are equal under law" thing doesn't fly in Europe either. A relatively recent example is the German law that dictates that all non-German residents, when they marry someone overseas, should have their spouse pass a German language proficiency exam. German citizens are not required to do so. There are many other examples from Germany, and other European countries.
Bad example. I'm a German citizen and my wife had to take the language exam in order to become eligible for permanent residency. Not because of any extraordinary circumstances either, just as a matter of course.
I know this for a fact not only because we were subjected to it but because at the time I read up on the pertaining law. (Sorry, too lazy to dig it up now.)
