Various and sundry people who probably don't visit here much are having an interesting debate on the riots in France.
I don't think you need to reach as far as to Hobbes in order to dispute the romanticization of political violence. It's precisely that romanticizing - indulged in by armchair idealists, stationed at a distance from the events themselves - which crosses the boundary from necessity to disorder.
There is an exact parallel between said romanticization and the rhetorical exaggeration of "state violence".
Injustice in government is evil. Violence is evil. Neither one justifies the other. When injustice convinces people that they have no other recourse but violence toward the achievement of justice, then you have an obvious symptom of social injustice and a need for reform. There is no need to justify violence in order to address the injustice which is at its root.