Many times, for I´ve lived in several countries in my life. The most difficult to me was Mexico, there are too many people who discriminate others, for you are white, because you are brown because you are rich, poor, whatever. But Mexico has a lot of other magical stuff, it is just talking about discrimination... well, it is difficult in that sense, and sometimes.
Another place I found difficult was London. I was discriminated too many times, but, at the same times, london is full of foreign people, so you can be discriminated by Turkish people, Chinese... jajaja... it is crazy.

 But I believe everywhere there are shit persons wh discriminate others just because of their ignorance. And, at the same time, there are too many nice persons in the world, so, this is just how you take it.