Sankirtana Yajna
Lord Chaitanya inaugurated the easiest performance of yajna, namely the Sankirtana-yajna.
Bhagavad Gita 3.12,
Srila Prabhupada
Benefits of Sankirtana
The wild tigers, elephants, bear and deer all together accompanied the Lord, and the Lord accompanied them in sankirtana. By this He proved that by the propagation of the sankirtana movement (congregational chanting and glorifying of the name of the Lord) even the wild animals can live in peace and friendship, and what to speak of men who are supposed to be civilized.
Srimad Bhagavatam Introduction.
Existence of Animalistic Envy
Animalistic envy exists in human society as long as there is no performance of sankirtana-yajna.
Purport on Srimad Bhagavatam on 4.30.35
Verdict of Bhagavad Gita
To manage a sankirtana party nicely is more precious than all other activities. That is the verdict of Bhagavad-gita and the mission of Lord Sri Chaitanya Mahaprabhu.
Letter to Tamala Krsna – Bombay 13 November, 1975.
Sankirtana And Happiness
Through the popularizing of hari-kirtana, or the sankirtana movement, the brahminical culture and ksatriya government will automatically come back, and people will be extremely happy.
Purport on Srimad Bhagavatam 7.2.11
Sankirtana Yajna
Other yajnas prescribed in the Vedic literatures are not easy to perform in this Age of Kali, but the sankirtana-yajna is easy and sublime for all purposes.
Bhagavad Gita 3.10,
Srila Prabhupada