This is proven untrue by history: Nazi Germany, the Irish Revolution, and countless others have proven that brutal, oppressive regimes can only be stopped by violence. I'm not saying the present-day US government is anywhere near this bad, but your statement simply isn't true: violence was absolutely essential in stopping tyranny in many places in history.
I don’t think your comparison to the Irish Revolution is accurate as there is no country occupying the United States. These people have the same political liberties and possibilities as any other citizen.
What exactly does the US have to do with anything at all here?
I'm only responding to the claim that "political problems can be solved without resorting to violence". I never made a comparison to the US. The people of Ireland were definitely NOT able to solve their political problems without violence.
>Nazism was the result of violent extremism becoming politically mainstream
Yes, but that's beside the point. Germany's neighbors had no choice but to resort to extreme violence to handle the Nazi problem. It was either that and surrender and line up for slavery or death camps.