The speech in question was written by the Hosting Committee in Brazil. This is common to do - and then send the speech to Rome before the actual papal visit is made.
Brazil is undergoing an upheaval ever since the assasination of a Religious Sister (1 or 2 years ago). The Sister is USA born, but obtained Brazilian citizenship and frequently has been asked to represent Indigenous concerns to the State and Church. It was common for Brazilian Ranchers to kill or hire people to kill Indigenous Speakers. The Sister was killed in this way. Within a couple days the Indigenous Population shut down Brazil blocking roads and other trasportation. The government had to reform and begin to make good on treaty promises.
Brazil’s Non-Indigenous minority ruled the Native majorityin an aparthied manner.
Many questions regarding the Pope’s brief statements have come up. Most of those questioning do so with great respect of the Pontiff. The remarks were way to brief for such sensitive areas. It is very easy to see how it can be taken the wrong way.
It will take additional study to find out, not just from the POpe, but most importantly from the Brazilian Bishops about who wrote the speech and what was thier intent. This is a very complex issue and cannot possibly be fully understood in such a short time.
My personal preferences would have been for the Pope not to even mention the Native concerns and the Church, unless it could be in a different speech. That is how Pope John Paul II addressed Native/Church concerns.