One of the classes I am taking this semester to go towards my minor in political science is "Understanding International Terrorism". So far the textbook has been the most interesting textbook I have ever read. Just reading about the history of terrorism from the dawn of recorded history is pretty awesome. Though the book is supposed to be unbiased, yet thus far I would guess that Muslim extremists would not like the book one bit.
It actually has mentioned the Waco situation, but as a comparison to what most countries consider terrorism and what they don't. Waco was an example of how a person with very good manipulation skills could prey on weaker minds or loners, and have them believe in something that either they normally would not or actually don't fully understand. It gives them a sense of belong to something that they perceive as important because some extreme leader has convinced them of that, thus also getting them to do things they never thought about doing before in the name of religion, culture, etc. The Branch Davidians had not committed any terrorist acts and might not have been a terrorist organization, but the fact that law enforcement felt they could not wait to see if they did anything was evidence that the BDs were considered to be an organization capable of terrorist acts.