The man, identified as Vishnu Gupta, was protesting against Bhushan's comment on the presence of the army in Jammu and Kashmir.
Calling him a "traitor", Gupta shouted slogans against the AAP leader.
Gupta, who belong to a right-wing outfit, disrupted Bhushan's meeting and then left the venue.
Gupta has been wanted by police in Uttar Pradesh since last week for allegedly being part of the group of people for vandalising the AAP party office at Kaushambi in Ghaziabad, reports said.
The activists of Hindu Rakshak Sena, led by its leader Vishnu Gupta were protesting against the Kashmir referendum remark of Bhushan, where he said the people of the Valley should be consulted on whether the Army should be posted in the region.
Bhushan had earlier alleged that outfits affiliated to the Bharatiya Janata Party (BJP) and its ideological patron Rashtriya Swayamsevak Sangh (RSS) were behind the attack on AAP office.
--IBNS (Posted on 13-01-2014)