Exactly right. The only actions which fit the definition of vigilantism in this event were those of Rosenbaum, Huber, Jump Kick Man and Grosskreutz, all of whom were taking the law into their own hands and imposing their own street justice for what they mistakenly thought was some kind of wrongdoing by Rittenhouse.
The only “law” Kyle was enforcing was nature’s law of self preservation, and THAT is not being a vigilante.
Aren’t the riots in and of themselves a form of vigilantism?