Led by Dal Khalsa president Harcharanjit Singh Dhami, the demonstrators, carrying placards and shouting slogans, demanded from the Punjab government to release a list of all those killed in the Golden Temple complex during the operation.
The outfit also passed a resolution on this occasion.
Operation Blue Star was launched in June 1984 to flush out hiding militants in the Golden Temple led by their leader Jarnail Singh Bhindranwale, who was also killed in military operation.