Yep even the ancient powerful races have egos!! As for the Ministry of Peace that the officer came from it was introduced last season. That's not a new element; it was already there. The Nightwatch has anti-sedition laws - a protest would be seen as sedition right? So perhaps there are those that do it, but others wouldn't want to risk it, and in fact you'll hear about some other locations outside of Babylon 5 that don't agree with the president's policies. Also history has proven many times over that no way people would stand for it is actually not true - there are always collaborators and sympathizers and people who just don't want to get involved. There's more to the Zack arc coming..