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.
That is the process of social upliftment. And we follow the footprints of Sri Caitanya Mahaprabhu and His associates who were all kind enough to raise the social status of every one concerned irrespective of birth and occupation.
Such process is not only transcendental to all sorts of mundane speculation, but is very simple and innocent. The principle is a sort of curing a disease not only by administering proper medicine but also by supplying proper diet at the same time.
The medicine is administered through submissive aural channel as "Hari Sankirtana" which means
(1) To sing "Bhajan" songs glorifying the Almighty and His Pastimes.
(2) To preach the teachings of Bhagavad-gita, Bhagavata, Ramayana, life of such saints as Caitanya Mahaprabhu, Tulsidas etc.
(3) To establish the philosophy of devotional life as against fruitful action or dry speculation of empiric philosophy and meet the opposite elements with all logical weapons. i.e the medicine of "Hari Sankirtana" is administered by threefold action, namely by (a) melodious songs (b) by propaganda through press and (c) by propaganda on platforms.
The diet portion of the transcendental treatment consists in the distribution of prasadam. i.e. in all gatherings the audience should not only be sustained by melodious musical performances of Bhajan Sangat or by religious or theistic discourses but they must be given some sort of remnants of food-stuff offered to God, as recommended in Bhagavad-gita.