From the founding of Pennsylvania until the mid-18th century, the colonial government was under the control of the Quakers. With increased immigration of other groups, especially Germans and Irish, the Quakers became less representative of the populace and found it hard to govern for at least two reasons.
The Quakers of the time held strongly to their beliefs no matter what the pressure. One was they refused to take an oath; another was their pacifism.
English law required that court officials and witnesses take an oath. Since the Quakers wouldn't take an oath they couldn't serve as judges and other officials. Since they wouldn't take an oath, they felt they couldn't administer an oath. The courts nearly ground to a halt.
As the population increased, the western movement put more and more pressure on the Indians. The invasion of Europeans was resisted violently be the Indians. Of course, the Europeans didn't think they were invaders but civilizers. Since the Quakers were pacifists, they didn't provide any military protection of the settlers. In fact, they thought gifts to the Indians would keep the peace.
Fewer and fewer Quakers ran for public office. In fact, some even withdrew from office rather than act against their beliefs.
For more about the Colonial Quakers, see "The Americans: The Colonial Experience", by Daniel Boorstin.
Doesn't this sound familiar in today's events? We have a party that would rather see the government fail than go against their own beliefs. We have people who don't like foreign troops in their countries and react violently. We have people who think if we only provide gifts to others things will get better (military aid to corrupt governments or concessions to people who are fighting those they consider invaders).
We will be in deep, deep trouble if we are governed either by those who look for ideological purity or by those who think we should act nice to violent people.