If this is true, a big IF, then I wonder what Messi thinks of Abidal and Eto'o before him? Two significant pieces (to varying degrees) of Barca's success over the years.
Having actually been to Brazil and Argentina (albeit for weeks and months and not years), I am still in two minds as to whether South Americans are being genuinely friendly when they say words like negro to address a black person.
To be fair when I was in Buenos Aires, literally no one gave a shit that I was black. No bad looks, no bad words aimed at me and full normal service at bars and shops. During tourist visits people were even mentioning black history just because I was there. Almost cringeworthy. Having said that, people from Buenos Aires people are adamant that they are seen as European which other South Americans find annoying or hilarious.
Brazil is a whole different kettle of fish.
Has RC8 posted in here yet? He should shed some light.