There's a propagated distortion regarding the meaning of human rights here in Brazil, it seems to me. There's this idea that human rights is synonym with being soft on crime, not actually punishing wrongdoings, treating criminals better than honest working folk. So, understandably, a lot of people start seeing "human rights" as part of the problem.
Crime can be solved in two ways, one of them is through the kind of policies you've mentioned. The other -- which may only work with crime committed or allegedly committed by the poor -- is by widespread oppression and institution of elements of a police state (the drawbacks are many as you can imagine). Brazil currently does not have the infrastructure to follow the former so it seems to be courting the latter; It doesn't seem to be in the best interest of politicians to work towards the better option. Possibly, who knows, because it would be the harder and riskier approach regarding whether it could bring them immediate votes and popularity.
Crime can be solved in two ways, one of them is through the kind of policies you've mentioned. The other -- which may only work with crime committed or allegedly committed by the poor -- is by widespread oppression and institution of elements of a police state (the drawbacks are many as you can imagine). Brazil currently does not have the infrastructure to follow the former so it seems to be courting the latter; It doesn't seem to be in the best interest of politicians to work towards the better option. Possibly, who knows, because it would be the harder and riskier approach regarding whether it could bring them immediate votes and popularity.