"authorities will handle it" is a fallacy that is demonstrated to be wrong in practice. The theory of how societal functions operate is not at all how they're implemented - lack of evidence, corruption, and incompetence all contribute to there being little justice for anyone.

Not sure if you're trolling or just very naive. Knowing and having proof are two different things.

Does Russian journalists and political activists falling out of windows en masse tell you anything? Or would you say they were all experiencing mental health issues because there is otherwise no proof they were murdered?

The media are all over it, you may check it, but law enforcement isn't.