I always thought the song was way too divisive. There are decent people in every generation and there are arseholes in every generation. Since that song was written we've ended segregation in the US, gone a long way towards enlightenment when it comes to homosexuality and abortion, expanded education, drastically reduced the numbers of people living under dictatorships (no thanks to US foreign policy), got rid of the Berlin Wall and had the liberating phenomenon of punk. There's a long way to go. I won't bother listing the downsides. I don't really think Dylan changed anything, whatever his fans think.