Here are a couple of links that might help you to answer the question for our next session. Do not limit yourself to these links:
Is democracy the desired goal of all societies and, if not, should it be? The corollary question being, is democracy the ultimate form of government for which all societies should strive?
The Stanford Encyclopedia of Philosophy defines Democracy for us and offers some argumentation
Watch this News Hour interview with Natan Sharansky, author of “The Case for Democracy: The Power of Freedom to Overcome Tyranny and Terror”