Is it fair to kill an accused person without trial?

Lot of my friends are aware of RAB ( Rapid action batallion) and for those of you who are not it is a special team set up by Bangladesh government to combat crime.

The question is, will it be possible to do so in a country where corruption is in every corner? Or was this team set up just for the benefit of the ruling party?

They use the word encounter or crossfire to define a murder. It is an international human rights concern to look into such unjust killing. I believe a lot of the international organisation are doing so including the UN, but are they doing anything to stop it or it is just in black and white?

Even though we know that the government is fully aware of it, but they remain silent or avoid it.

So on this note please do comment what should be the role of the government and how should the UN involve themselves to stop such killings.