A video of the lynching went viral on social media
The Mancha is protesting a resolution that Pakistan National Assembly adopted on Jamaat-e-Islami leader Abdul Quader Molla’s hanging for his crimes against humanity in 1971 that include murder.
Correspondents from the spot said they had seen at least two of the marchers taken into the police van after a mêlée.
The Mancha came into existence after Molla got a life sentence in the war crimes trial, which many in Bangladesh felt was too lenient.
The Appellate Division of the Supreme Court later revised it to death penalty.
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