This is hysteria. I have many coworkers who ride BART on a daily basis for 15+ years and not a single reported incident from any of them, other than stinky homeless people that very rarely ride during peak hours.
https://www.sfchronicle.com/bayarea/article/BART-s-approval-...
slightly depends on your entry/exit stations but I would regularly see crack/heroin use, defecation, deranged meth heads screaming and/or picking fights. I doubt I am alone in this.
Have you personally taken BART on a consistent enough basis? I took it two days a week for a significant length of time and calling it filthy is not hysteria at all.
Ridership has increased 22% over the past decade, however violent crime has increased 75% over the same period.
I've taken public transit all my life and I'm scared every time I take the bart :/