Assertion:
"Most people are in prison for pot-smoking and non-violent offenses".
"Most - non-violent offenses".
Quotation: the majority of them nonviolent offenders
majority - nonviolent offenders
I don't know how else to spell it out.
Well, it is an article by a journalist. While I tend to believe this statement I would want to see some hard numbers before committing myself to things like policy decisions (or even going to some sort of protests).
Anyways, what exactly are you inferring from this? That those who commit drug felonies are not violent offenders? Even if that were true, your "citations" still don't support the assertion of the gp that "Most people are in prison for pot-smoking and non-violent offenses".