To say that people must never revolt violently is to say America’s founding was illegitimate
The question is not if it is ever justified. The question is when.
The credible threat of revolt was understood by America’s founders to be necessary for liberty to exist, just as they understood that standing armies were a great threat to liberty and that eternal war is the graveyard of freedom.
The mainstream left in the US, Britain and many other countries, exists today in large part to ensure that there is no credible threat of revolt from the left, so that the elites can steal and kill as they please. Its only other purpose is the same as that of Conservative parties: to steal from the poor and give to the rich, but while pretending they do not.