FREMONT, MICH. (WZZM) – A West Michigan woman who had her sister’s ashes shipped to Michigan was horrified by the damaged package that arrived in the mail. “I could not believe what I was seeing: ashes, bones, all around the edges of the package. It was just full,” said Janice Martin. More

As a retired mail carrier, normally the urns are very, very heavy, and they used to be sent Registered Mail, so everyone that handled them had to sign for the package.
But from what I see, and although the USPS handles gazillions of packages each year, it looks like to ME, that someone, somewhere did this intentionally.
Horrible, to be sure, to even think it, but there are crazies out there.