This doesn’t look all that “exemplary” however, when the ability to palm off your crime on some hapless, unwilling Pedro is quite easy. All that was seen was that the vigilantism victims were near a school. Did the crowd go looking for more such people?
[This doesn’t look all that “exemplary”]
In everyday usage, the word “exemplary” has hived off from its actual meaning. The actual and original meaning is “to set an example”, in the sense of “if you transgress, you will be killed in a painful and gruesome manner”, pour encourager les autres. Exemplary citywide massacres of cities that resisted a siege were used as a means of convincing other cities on the target list that they should surrender before that invader commenced an expensive and bloody siege.