Srila Prabhupada said that in the future high court judges would wear tilak. He also said that the modern consumer culture will soon be finished.
Personally, I don’t think the modern culture will last another 50 years, because the golden age of Mahaprabhu is just around the corner waiting to take root.
Still, I think that devotees should not waste their time on political agitation. They should simply preach the pure message of Srila Prabhupada. Society will change soon enough; it will be forced to, being, as it is, hammered severely by nature. We should let nature take its course. She will take care of the modern demon society.
Meanwhile, devotees should wait patiently and use their energies to preach Krishna consciousness as the solution to all problems. Srila Prabhupada never in his preaching targeted certain groups of people, except maybe scientists, which he called rascals. He also called modern politicians rascals. In fact, he said that anyone who is not a devotee of Krishna is a rascal.
Srila Prabhupada had the position and purity for that kind of heavy preaching, but he would never make a campaign out it. His usual style was preaching with compassion to all people, the message of Bhagavad Gita.
As far as I have heard, Bhagavad GIta is now being introduced into public education. Kids have to be educated in spiritual life from an early age. Most politicians are old fossils, they are too caught up in the system, change will not come from them. We simply have to wait for them to die out.
Although, I have to say, I’m quite impressed by Narendra Modi. He is a life-long brahmacari, and he seems to have some spiritual values. He is the most sage-like politician I have seen. Whether he will be able to affect some real change, I don’t know. He is still part of a deeply corrupt system. Only time will tell. In the mean-time, our job as devotees is to preach Krishna-consciousness far and wide, to the best of our ability.
Srila Prabhupada says:
...you can understand by the one symptom. Just like pressing one rice from the whole pot of the rice you can understand the rice is quite all right, similarly, by one symptom you can understand who is a rascal, by one symptom. What is that? Na mam prapadyante. He is not a devotee of Krishna...? He's a rascal. That's all. Immediately you take it without any consideration that anyone who is not devotee of Krishna, who is not prepared to surrender to Krishna, he's a rascal. That's all. This is our conclusion. Thank you very much. Hare Krsna.
(Lecture, Bhagavad-gita 7.5) -- Nairobi, November 1, 1975