Yeah, I've actually seen this happen enough times that I believe it's more common than people think. I don't have statistics, but I've noticed multiple people die under mysterious circumstances (including a close friend) and they were usually ruled a suicide, even when the family objected.

Example: Where I grew up if you didnt die within 24hrs or being shot it was not considered a murder, the gorvernment changed the way the statistic measures murders many years ago to lower the ‘murder’ rate.

Edit to add this link with the murder rates: https://www.statista.com/statistics/984823/homicide-rate-pue...

Have you considered getting in touch with an investigative journalist?

Well, that's a "technically" while still missing the point. It is much more difficult to meaningfully shift murder rate numbers via mass mis-reporting, compared to other statistics.

Brazilian police: Hold my bear.