It does worry me that although it serves the glee of the liberal / left to see news of yet another sentencing of an august rioter we may be repeating the mistake we made when we incarcerated a load of Islamic extremists together and inadvertantly created centers if further radicalisation to rival those of Afghanistan.
I doubt those locked up for events this summer are going to emerge from prison any less extreme than when they went in.
This paragraph is a good point and why I don't think you can arrest your way out of a political crisis. So many regimes have tried it over the years and while you might get temporary order, it doesn't change anybody's mind about the truth or justice of a situation and the vast majority of these regimes collapse and the truth does eventually come out. Meanwhile, the political prisoners you've arrested become radicalised and become even more of a threat later down the line.