He was banned because he was found guilty in court. He was found guilty of spreading "dangerous" ideas. He was against cruel punishment.
Rawanda- The United Nations sent a peacekeeping force in order to try to limit the fallout from the civil war and genocide taking place in the country. They were somewhat ineffective, due to few troops on the ground, limited authorization for using force, and the overwhelming amount of violence occurring.
Tienanmen Square- The international community condemned China for its brutal use of force against student protesters in the country. Sanctions were also employed, and China found itself briefly exiled from the diplomatic community. Ultimately, China was too important an economic and security partner for the world to shun. Little has changed in terms of human rights in the country following the incident.
Citizens like me can read and become informed. We in the United States are able to choose our leaders, an incredible privilege and globally important responsibility, due to our nation's status in the world. Given this fact, we should be the most informed citizens in the world; we are not. A more informed citizenry would elect leaders whose ideas are at least based on intimate knowledge of the issues, regardless of whether or not everyone agrees with those ideas.
The 38th demand or clause basically says that the sovereign's (the king's) power is limited. According to this clause, nobody can be tried without the testimonial of independent witnesses. Until then, the king, as a supreme ruler, could do whatever he wanted, without providing a fair trial for the accused. Therefore, the court should now be independent and free of king's power.