Yes policing in this country in general is getting worse. The school to prison pipeline using SROs to imprison children is abhorrent and you didn’t even mention it.
However your initial argument is that weed convictions are getting worse. And there’s nothing to support that claim.
What you are mentioning are general broad stroke ills that we have to, as Americans address by holding our leaders accountable, voting in local elections and uplifting marginalized intersectional voices to the national level.
Shit is dire, but we have to be specific and precise in our criticism or we’ll be discounted outright.
Leftists have to work so much harder to even be heard let alone change anything, and we cannot do that without precise irrefutable positions and easily understood and concise points.