Vaishnava Samhita: "Venkatrama Arya Charitam" Book 1 Chp 16 Shloka 29
तस्मात् सर्वत्र सरवैश्च कर्तव्यं हरिकीर्तनम्
नान्यथा पापवृत्तोयं कलिर्दुष्टो विनश्यति
So, everywhere and by all Lord Hari should be worshipped with the aid of Nama Kirtan. This heinous and sinful Kali cannot be eliminated otherwise and banished once for all.
Please check these: Excerpts from a discourse by our Sri Sri Muralidhara Swamiji