The area where the police made their effort is called Jacarezinho, and is located in the northern part of Rio de Janeiro.

The area is the headquarters of the criminal organization "Red Command".

Many believe that the tough efforts are necessary to curb drug trafficking and crime.

But criticism has also grown stronger, not least after the Black Lives Matter movement and the debate on violence.

- Many in Brazil see parallels, not least because the black population is severely overrepresented in these poor areas that are affected.