UPDATE: Yes! I called it. Both crazy and homophobic. From the Smoking Gun:
Suspect Susan Burns, who turned 53 Friday, also said that the Gauguin painting “Two Tahitian Women,” which is pictured at right and valued at $80 million, is “very homosexual. I was trying to remove it. I think it should be burned,” according to a criminal complaint filed in D.C. Superior Court. “I am from the American CIA and I have a radio in my head. I am going to kill you,” added Burns, who lives in Alexandria, Virginia.
The crazy woman was screaming “this is evil” as she tried to destroy the painting of two bare-breasted women standing next to each other. She may have simply been insane. But it is interesting that the picture is of two naked women.