Okay kiddo, let me tell you about the Brazilian abolitionist movement for animal liberation. It's just like when you learn about how some people in the past believed it was okay to own other people and make them work for free. But then there were some people who said, "Hey, that's not fair, we need to treat everyone equally and not own or exploit other people."
Well, there are some people in Brazil who believe the same thing should be true for animals. They think that animals deserve to be treated with kindness and respect, and that it's wrong to use them for things like entertainment, food, or clothing. They want to make sure that animals have the same rights as people, just like the abolitionists wanted to make sure that people of all races had the same rights.
They call themselves abolitionists because they believe that like the abolition of slavery, the use of animals for human purposes should also be abolished. They work to raise awareness about animal rights and to change laws to protect animals. They also rescue animals from cruel living conditions and help find them new homes where they can be happy and healthy.
So, just like how we've learned to treat all people equally, some people in Brazil believe that we should treat animals equally too!