A lot of them in third world countries are prostitutes. Prostitutes, male or female, have high levels of assault. That’s where those sort of stats come from, particularly Brazil.
Eg, this map from a pro-trans org of murder rates. Note that even in the worst countries the rates are lower than the rates for women (eg, 2023 this site has <100 TIM murders, Amnesty lists 1463 femicides.)