A lot of the early 19th Century movements were started by people who wanted to catch up to Europe. They wanted to restore national pride in countries which had not really had much experience as entities separate from the Ottoman Empire for centuries. A lot of them eventually gave up on Europe when they felt slighted due to racism they encountered there, and became revolutionaries instead.
Spacial, I think a lot of people would cheer if they knew the alternative was going to be unpleasant for them, their families or even entire villages.
In other cases, there are not that many people willing to be martyrs if no-one is going to know what happened to them either, and they just "disappear".
Karen.