They feared aristocratic conspiracy
Answer: Absolutism, the political principle and exercise of unlimited, central power and complete sovereignty, as conferred particularly in a monarch or dictator. ... The weakening of the Papacy managed the growth of a number of rulers effectively declared their authority and established absolute rule.
Those places will contain a large amount of people, or in their eyes a large amount of victims or targets. They think they’ll be able to conflict injury, or kill more people when the people are in a large group. Hence 9/11. The twin towers contained a very large amount of people or as they saw it a large amount of victims to get their views across
It was unanimously condemned by all major world powers