Harinama in Gorky Central Park (Moscow, Russia) (Album with photos)
Srila Prabhupada: In the Age of Kali, there is no religious principle except chanting Krishna’s name. It has been ascertained from all the scriptures that Krishna’s holy name is the essence of all mantras. (Renunciation Through Wisdom, 5.1 Purport)
Find them here: https://goo.gl/aTYvUM