Yeah, it's a charged issued - I'm almost too frightened to post anything on it.
Mati, I respect the angle you are taking when you say that certain names are not considered offensive in Argentine society.
However, I also believe that racism usually affects via the way it is interpreted and not by the way it is intended. I think that an Asian (non chinese) person would have every right to be offended by being called 'Chino' - Imagine if they were Tibetan for example? I think that would be hugely offensive to call a Tibetan Chinese over and over again.
My girlfriend used to call her old boss 'chino'. When I saw a photo of him I saw he was Japanese and I asked her if she would like being called "Mex" in my country because she has dark skin and speaks Spanish - so she must eat burritos and be from Mexico, right?. She said of course not and I agreed that she should never ever have to tolerate that, even if it was intended 'affectionately'. On a personal note I asked if she would mind not using the term anymore because I found that level of ignorance really unattractive in a person I want to be involved with long term. In a way it's totally uncool imo, but in another way I try to understand as she just didn't know any better because she has grown up and lived around that sort of attitude.
When I met her old boss and his wife I found out that they were actually both from Okinawa, which is a kind of Japanese sub culture (They consider themselves a different in some ways to the 'mainlanders' similar to the Catalans and the Spanish. He took zero offence to the nickname of course, because it is 'par for the course' here. Perhaps this is the boundary between ignorance and racism - intent to offend or degrade (I suppose we call it 'casual racism' also)
Mats, you sound like an intelligent dude and I think you bring a lot to the forum and I don't think you're a racist. But I think using those names is ignorant, and if the names are cool to use in some (not necessarily all) Argentine circles then in my opinion those Argentine circles ignorant. I certainly don't want to say that people who grow up in Argentine society are ignorant, because its certainly not true, but I do interpret these words as ignorant. Sadly, this attitude may result in a tolerance for racism / discrimination on other levels, whether it be against Bolivians, Paraguayans - whatever.
I've tried to put down some thoughts down without committing ignorance toward Argentina's customs myself, because they have their own way of doing things here thats for sure (Different to the western bubble I grew up in - and we definitely have our flaws too). I'm just saying it's not the same everywhere and in an international environment one needs to be sensitive (of course there is a line that crosses into over-zealous political correctness)