I've been using the BART system for ~12 years and I've seen it all.
- swampy bum's and crazies sleeping on the trains, in pissed in/crapped in clothes.
- psyco's running screaming through the cars, chased by BART cops.
- stations closed for bomb threats and BART SWAT teams, with FA MP-5s, M4s and dogs, sweeping the area's
- fires on trains and at stations
- train breakdown's, even in the transbay tunnel
- had my truck vandalized in one parking lot, had a car hit in another, and fought/won an incorrect parking ticket
- had altercations with various "cultually diverse" passengers
- half length trains run at high commute times, leaving cars packed over capacity
- "urban youths" smoking pot on the trains
- trains going out of service and stranding passengers at random stations
and countless other issue's makes riding the BART a daily experience. I long for BART to raise their fares high enough to no longer justify using their system, and just drive in to work. But then that brings up the whole finding/paying for parking issue's.