From The Enigma
NPL Magazine - Jan. 2012
SANIT

In the flat below, the key word "BRAVA! stands for two separate words which name the subject of the flat.

Here's something that you probably
don't know:
A noted tax protester, long ago,
Was also quite a famous opera star,
And she was temperamental (they all
are).
She had a lot of fans. When she came
out
For curtain calls, then "BRAVA!"
they'd all shout.

HINTS:
#1: A female opera star is often called a DIVA.
#2: There has never been another protest quite like this one.

Answer:

(Lady) GODIVA  (GO DIVA)