Shouting slogans and carrying placards like 'Hang 1984 Culprits' and 'Give us Justice', the protesters marched to Tilak Nagar Police Station in west Delhi and blocked traffic in the area.
"After 30 years we are yet to get justice. Government should feel ashamed. We will never forget and forgive who allowed culprits get scot free. We want justice," one of the protesters said.
Kumar, a former Congress MP, was acquitted by a court here yesterday in one of the cases of 1984 anti-Sikh riots.