You should assume the government will always have a lot of incompetence and abuse in the application of its power.
So give government as little power as possible.
If you give government as little power as possible, because you believe all government is maximally incompetent and abusive, you might as well just do away with it altogether and have anarchy.
Allowing a government at all implies at least some trust that government can have some positive societal effect.
I don't think it's fair to use extreme examples like that EMT getting killed as a generalization of the incompetence of "authority". In that case, it's more like a couple of trigger-happy police officers severely abused their rights.
It seems law enforcement doesn’t really have the time (and maybe lacks the interest/expertise) to investigate most cryptocurrency cases until they become major news.
its happened plenty of times and funds have been recovered, its usually in Department of Justice press releases and an associated court filing. Other times you can just talk to people that were involved in an investigation. Not really news, stuff happens way after the event.