Old article so not sure if same idiots are involved but...artists and architects who volunteered. Now they may have to fill it according to racial quotas for all I know. They had terrible taste in art then ... if it's the same bunch then they are addressing Pittsburgh's "paucity of art" by actually removing one of the few worthwhile examples of art there is in town...and that is not the commission's reason for being. It was supposed to review proposed public works not remove public works.
So if no one specifically gave them the power they are just assuming it because no one is stopping them.
http://old.post-gazette.com/ae/20020220artcomm0220p3.asp
Rob Indovina, Acting Chair
Mark Baskinger
Sarika Goulatia
Kathryn Heidemann
Kilolo Luckett
Kary Mercer-Arimoto
Andrew Moss
Data from Pittsburgh Art Commission - no email addresses.
However, they are appointed by the Mayor - Bill Peduto (D). No email address found - half the links there return "Not Found". Typical.