Razakar (رضا کار) is etymologically an Arabic word which literally means volunteer.
On the other hand, in Bangladesh, razakar is a pejorative word meaning a traitor or Judas.
Razakars were an East Pakistani paramilitary force that aided the Pakistan Army against the Mukti Bahini during the Bangladesh Liberation War.
[5] The phrase comes from the East Pakistani paramilitary force (see above) who opposed the independence of Bangladesh.
[8] After hearing this sentence, they started to march on the streets giving the Razakar slogan by saying "Who are you?!