Hans and Sophie Scholl, brother-and-sister members of the White Rose resistance movement within nazi Germany, who were executed for producing a series of anti-nazi propaganda leaflets at the ages of 24 and 21 respectively. I always have a soft spot for people who use art and language to combat fascism, and Sophie in particular had a real way with words:

The real damage is done by those millions who want to 'survive.' The honest men who just want to be left in peace. Those who don’t want their little lives disturbed by anything bigger than themselves. Those with no sides and no causes. Those who won’t take measure of their own strength, for fear of antagonizing their own weakness. Those who don’t like to make waves—or enemies. Those for whom freedom, honour, truth, and principles are only literature. Those who live small, mate small, die small. It’s the reductionist approach to life: if you keep it small, you’ll keep it under control. If you don’t make any noise, the bogeyman won’t find you. But it’s all an illusion, because they die too, those people who roll up their spirits into tiny little balls so as to be safe. Safe?! From what? Life is always on the edge of death; narrow streets lead to the same place as wide avenues, and a little candle burns itself out just like a flaming torch does. I choose my own way to burn.

And her final words before being executed:

How can we expect righteousness to prevail when there is hardly anyone willing to give himself up individually to a righteous cause? Such a fine, sunny day, and I have to go, but what does my death matter, if through us, thousands of people are awakened and stirred to action?

NB: I should note that there's a bit of conflict about this, as the nazi executioners were not meticulous record keepers. But it seems that it was either this or "Your heads will also roll", but either way she apparently said both and either one is great IMO.