[clarkevans]

You wrote: "Most of this money comes from drug busts... not seized from John and Jane Doe for no reason"

Yet, reports in the media [1] fit a common pattern: the officer encounters a person carrying several thousand dollars in cash, and takes it asserting it was drug related. This assertion doesn't require proof or even that the person involved be charged with a drug offence.

[1] John Oliver, Last Week Tonight, Oct 5, 2014 / https://www.youtube.com/watch?v=3kEpZWGgJks

[rayiner]

There is zero evidence that any significant amount of the above number happened under circumstances like those you mention.