Me again, hehe. I don't think so. There hasn't really been enough contact between Latin people and white South Africans (all South Africans, actually) for there to be a stereotype.
Most of us wouldn't really know enough about the various cultures of Latin America to have any preconceived notions. I imagine Latin people are viewed the same as Mediterranean people in Europe, as exotic and romantic. Many romance novels in SA have Greek/Italian/Spanish men as the love interests.
Many girls dream of being swept of their feet by a handome stranger. And many songs sing of women wih "Spanish eyes" etc. There are also English and Afrikaners with Portuguese ancestry in the country and they are not really seen as different. I would imagine that they would think the same of Latin Americans.
For the most part I think your language/mother tongue would have a greater effect. If people hear you have an accent, they would probably be interested to know where you are from etc. There is a strange phenomenon in SA that I've noticed where some white people who are racist, are only so towards the local non-white people. If you're African-American or even Namibian or from Ghana, they won't think any less of you, but they are suspicious if you are from SA.
The same is true for some black people. It's weird, but then again racism isn't logical or reasonable. As for the Coloured and Black community, I should think that they would also be impressed and interested to know more about you and your culture etc. We do have many racial problems in the country, but you will be surprised to see how most people are very friendly and welcoming.
The best advice I can give you is this: learn a few phrases from each language, or ask people how to say hello or thank you etc. South Africans love it when foreigners try to speak any of their languages.
It doesn't matter where in the world you are, racism will always be a factor. But racism in South Africa is centered more around black and white. 90% of racism in South Africa revolve around those two groups.
Those that fall between them (hispanic, colourd, asian etc) are generally forgotten and are accepeted without predujice on both sides. Not that it's unheard of that people might be cruel, but it is hardly ever heard of when it comes to some one who is not black or white.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.