His poor decisions nor his criminal behaviour justify him dying in police custody.
When the police detain somebody they have an implicit duty of care, if you’re harmed in their custody - they’re responsible.
They do, but equally they should not be expected to have a comprehensive cardiovascular knowledge as well as diagnosis ability, and the effects of illicit drugs. Oh and the telepathic ability to tell what somebody has consumed and on what level.....
and if they are telling porkies.