That intro is so recognizable and fun to learn and play, but I think that since it is slow and simple that you could use whatever plucking pattern is most convenient. Many banjo songs like Foggy Mountain Breakdown and Dueling Banjos lend themselves to certain plucking patterns for the sake of speed, but I don't think you will learn any bad habits plucking the intro to Rainbow Connection however you want. Have fun with the banjo:).
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.