BBC News Latin America & Caribbean
By Rachel Schraer
By Michelle Roberts
Health editor, BBC News online
By Michael Winrow
Technology of Business reporter
A BBC investigation uncovers who is most at risk of lethal police violence in Brazil.
By Gary Meenaghan
The prime minister has suggested there could be restrictions on travel from Brazil to the UK.
Nieves was born to a black-and-yellow mother carrying the recessive gene that causes white fur.