The Krishna consciousness movement is essential in human society, for it offers the highest perfection of life.
How this is so is explained fully in the Bhagavad-gita.
Unfortunately, mundane wranglers have taken advantage of Bhagavad-gita to push forward their demonic propensities and mislead people regarding right understanding of the simple principles of life.
Everyone should know how God, or Krishna, is great, and everyone should know the factual position of the living entities.
Everyone should know that a living entity is eternally a servant and that unless one serves Krishna one has to serve illusion in different varieties of the three modes of material nature and thus wander perpetually within the cycle of birth and death; even the so-called liberated Mayavadi speculator has to undergo this process.
This knowledge constitutes a great science, and each and every living being has to hear it for his own interest.
Srila Prabhupada, Bhagavad-gita