I never do it because the foreign names sound unusual. I do it to offend the very specific groups or individuals I do it to and/or the supporters of same.Mousavi declared his victory several hours before the polls even closed.
Yes, however you choose to dress it up, making fun of people because, to you, they have funny-sounding foreign names, makes you look stupid, at best.
I assume, btw, that Mousavi did so because he had people reporting to him of the general voting by people wearing his colors or otherwise identifiable as supporting him.