This video really goes out to express the stuff that I love about Edelgard and how she's very much like Lelouch.
And overall asks the big question about Edelgard's actions, of starting a war to attain freedom from the system, and whether it was actually the right thing or not. The answer is best understood if you actually watch the video from beginning to end.
It isn't long, but it really tackles so many important things that makes you aware of how the struggle is.