He also told his supporters to prepare for a "long journey".
"Vyaktivad loktantantra ka dushman hai (individualism is democracy's enemy)," Yadav said addressing over 200 supporters from Haryana and Punjab who had gathered at People's Convention Centre Hall in Sector 36 here.
Yadav, who will be holding another such meeting in Lucknow on Thursday to muster support of AAP volunteers, said that big changes can't be stopped by anyone.
He further told them to be prepared for long haul and remain true to the original spirit of the 'andolan'.
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The Yadav camp has claimed to have received an "overwhelming response" from 27 states for its April 14 convention to be held in Gurgaon in Haryana.
Yadav today asked his supporters and other volunteers to attend the Gurgaon meeting in large numbers, saying it is the beginning of a long journey.
The Yadav-Prashant Bhushan camp is using social media sites such as Facebook, where it has garnered more than 5,000 likes, and Twitter to publicise the dialogue scheduled on Ambedkar Jayanti.
AAP has already warned of strict action against those attending the meeting.
Yadav and Bhushan were expelled from the party's National Executive along with Anand Kumar and Ajit Jha on March 28.
Notably, Yadav's rival faction also held a separate meeting here today, with AAP leader from Haryana, Navin Jaihind, insisting that Yadav's meet was "not an AAP workers meeting and it could have been his (Yadav's) personal meeting".