Here is something I came across...

"Two types of forces drove the start of the revolution: the practical and the religious. As described in the Causes of the War, the lack of a strong central authority in Rome under the incompetent Nero left Judaean society exposed to many dangers: crime and terrorism, exploitation by corrupt governors, and anti-Jewish violence in the surrounding multicultural cities.

In this environment, some of the wealthy and powerful of Jerusalem, particularly the younger generation, felt the situation required they take governance into their own hands, while the rest of the aristocracy preferred to maintain the status quo.
The same weakness of the central government was felt across the Roman Empire, causing several provinces to revolt. But Judaea also had another factor: the belief that there was a religious duty, indeed a destiny, to overthrow the occupying government and assist a king anointed by Heaven -- a Messiah -- in renewing a pious Jewish state.

This belief had been a cause of sporadic insurgency among the lower classes beginning with Judas the Galilean at the time of the registration of Quirinius in 6 CE. Descendants of this same founder took part in the opening phase of the revolution, one of whom, Menahem, took the role of the Messiah for himself."...
http://www.josephus.org/warChronology1.htm#factions