This is where the entertainment factor for this fight will come from - the prefight exchanges, which have been pretty fun (unless you mind lots of cursing and/or MacGregor's borderline racist taunts).
Americans are funny. They don't have any problem with fighters making racist comments about McGregor to sell a fight but when McGregor calls Mayweather "boy" or mentions favelas they get all hoity-toity all of a sudden.
Racism is racism.
What McGregor's saying is embarrassing but it's not as bad as what guys like Clay Guida and Urijah Faber have said about the Irish, and I don't remember any faux outrage over that.