Any chance you are talking about The Cleaners [0]?
Because that was also my first thought when reading this.
Tho it's not actually by PBS, it was originally produced by the cooperation of French and German public broadcasting.
But I'm glad it's finally available somewhere again. The original, publicly funded release was depublished after 3 weeks due to specialties of the public broadcasting agreements. They have to depublish a lot of media after only a few weeks or else it's considered an "unfair disadvantage" for private media companies.
Tho it's not actually by PBS, it was originally produced by the cooperation of French and German public broadcasting.
But I'm glad it's finally available somewhere again. The original, publicly funded release was depublished after 3 weeks due to specialties of the public broadcasting agreements. They have to depublish a lot of media after only a few weeks or else it's considered an "unfair disadvantage" for private media companies.
[0] http://www.pbs.org/independentlens/films/the-cleaners/