What are the motifs in Shah of Shahs by Ryszard Kapuscinski?

The author offers several reasons why Khomeini emerged as the leader of the revolution. Although there were better known and better educated ayatollahs at the time before and during the Iranian revolution, Khomeini enjoyed the popular support of the people. Instead of writing obscure tomes or engaging in intellectual debates within religious circles, Khomeini took his message directly to the people, particularly to the conservative citizens of his hometown of Qom, who were especially receptive.