I'm remembering back to the story just a couple of days ago and I'm thinking about all the commenters who immediately accepted the story of the 'peacekeeper' guy - and the official line from the police - that Arturo was raising his weapon and heading towards the crowd, so the 'peacekeeper' shot "in defence of the crowd". Many commenters repeated the line he had been, "likely about to do a mass murder - it's very sad that a bystander died, but they just prevented a shooting spree". Anyone saying 'wtf why is the actual killer not arrested' and suggesting that we only had one side of the story (the killer's, who the cops were suspiciously immediately siding with) and that there is no proof beyond biased witness claims yet - was being downvoted.
Remember this shit next time you take the word of the police at face value when very few facts are available.