You’ll find this sort of passive voice

While that involved the passive voice ("shots are heard" and "officers [are] seen"), it's not the actual problem with that since the same sentence can be shifted into the active voice without changing the dishonest presentation ("... one can hear at least half a dozen shots, while two officers point their guns at him"). The problem goes far beyond the passive voice (which can be used accurately and correctly, as in "Jacob Blake was shot seven times in the back by bipedal pigs dressed in human clothing who were given weapons and a license to kill by the state" which only uses the passive voice for verbs), it's merely a tool that can be used to completely remove or transfer agency and frequently gets used excessively to completely remove even the grammatical hint of agency from anyone but the victim (going back to the sentence you quoted, Jacob Blake is the only grammatical agent in it, while everything else is a grammatical object that's heard, seen, or pointed by unspecified agents).

I don't even know how to formally describe what's happening on a structural level with how killings by police are reported on, because it's basically its own subset of English grammar that's not used anywhere but in formal propaganda writing for deflecting blame and muddying the waters. It's an extreme twisting of the passive voice to make transitive verbs intransitive, using intransitive verbs to deflect from the idea that there was an agent that caused it to happen in the first place, ascribing agency to inanimate objects rather than to people, and always refusing to ascribe agency to or describe the clear actions of police. You get shit like "bullet found in body of bystander who died following police involved shooting at CVS believed to have been fired from gun theorized to belong to sheriff department armory" (which is a paraphrasing from memory of an actual headline about police killing a bystander when they opened fire on a suspect in a drugstore), which is all sorts of tangled nonsense.