I don't know but Brazil is sort of known for having lots of transsexuals, including some big celebrities (of the Zsa Zsa Gabore variety, famous personalities). Seems they tolerate it pretty well. So they idea that they are hated and killed seems unlikely (but not impossible). More likely that there is more to the story.
In other words, if this happened in Saudi Arabia, yeah the "they killed him because he was a transsexual" would seem pretty likely. In Brazil, less so.