That's reasonable enough Wolfgang. It comes down to a personal decision in the end though. When Mugabe is ousted or pops his clogs, I will be no more sorry to see the back of him than Teribus. I don't like to see people losing their lives though just for the sake of a futile protest. You gave good examples to support your reasoning. You could equally have chosen the Scholls in Munich or the "Edelweisspiraten" in Cologne to support your point. One can only admire the courage of those, who chose to act in that way. However, protest - no matter how heroic - does not always expedite change. Sophie Scholl would certainly have faced imprisonment in the UK had she openly encouraged soldiers to desert in war time. Her actions may even have cost her the ultimate penalty. I can't help feeling that her life was wasted, because once she had acted, death was inevitable, but she was exactly the sort of person, whom Germany needed to rebuild itself after the war.
The other unpalatable fact about revolutions is that the opposition usually feel that the ends justify the means. This means that even when they are successful, they are severely tainted by the time they come to power. I prefer the Portuguese and Spanish models of emerging from dictatorship to democracy. I believe they are also more secure.
I have very mixed feelings when I read of the fate of martyrs. There will be plenty to do after Mugabe has gone. It would not be for the good of the county if many people threw away their lives in a futile protest against such obvious tyranny.