According to Vedic scriptures the present age is called Kali-yuga and almost all human beings are now degraded to the standard of the mode of ignorance and therefore the greater number of population are subjected to the pangs of the threefold miseries of material existence in the most horrible manner.
In such rabid condition of human being the panacea is "Krishna sankirtana" recommended in all scriptures. By this process, the forgetfulness of human being of his eternal relation with Godhead, is removed altogether.
Sri Caitanya Mahaprabhu as confirmed incarnation of Sri Krishna the Personality of Godhead inaugurated this sankirtana movement and He reclaimed all conditioned souls from all ranks of life even from animal kingdom for being re-instated in the transcendental relation and activities of loving service to the Absolute Truth. Thakura Haridasa who happened to appear in the family of a Mohammedan was one of His principle associates and His transcendental movement embraced all varieties of people beginning from the most erudite scholar brahmanas to the one who came in the family of yavana & candala.
The specialty of His movement was that the fallen candala did not remain a candala after his initiation but he was made to rise up to the status of Vaisnava which is far above the status of brahmana and other orders of life.