Does the Washington Red Skin crowd from the photo i posted mirrors the demographic percentage above, obviously not. Therefore, whenever someone post internet photos of crowds, i take it as a grain of salt until i visit the country and its many different regions, and have a basic understanding of the actual demographics. .
However, i am not suggesting the poster is actual wrong, because he knows his country better than me obviously, and i also heard southern brazil is far more European influence than most of the country, but at the same time it is better to visit the country and see things for yourself and get a better perspective of the people, culture and demographics of the nation.