Are S.F.'s Train Plazas Public Health Hazards?

Longtime HIV and LGBT activist Michael Petrelis is running for San Francisco's Board of Supervisors and he has the city's notorious 16th and Mission BART plaza in his sights.

The 16th/Mission Bay Area Rapid Transit station is known as dirty (and somewhat dangerous; see the NSFW video below), but Petrelis says the state of the station's plaza is endangering public health, specifically for seniors, children, and those with HIV. Citing rampant pigeon feces and piles of garbage, Petrelis wrote a letter to city and transit officials demanding they take action and steam clean the area, add "pigeon spikes" to keep birds out, and remove the trash that covers the area.

Writing in his blog, Petrelis goes out of his way to differentiate his calls for change from that of local businesses, who he says just want to rid the area of "undesirables."  What do you think — does San Francisco, which just became an American finalist for the 2024 Olympic Games, need to take action or is this simply a part of urban life?