to what extent can theatre express notions of culture and identity?

This seems to be two questions as sexual identity is one of many kinds
of identity and culture also has broad meanings. The theatre rivals
the printed word and one on one contacts for expressing sexual
identity and notions of culture and identity. Success is limited only
by the skill of the playwrite, the director, actors, seanary, and the
receptiveness of the audiance.  So to a great extent.   Neil

I would add that one of theater's primary roles in society throughout
the ages has been precisely that. I think to get an answer, you might
want to get more specific about what you're looking for... First off,
do you specifically mean sexual identity?  Assuming you do, are you
looking for plays that highlight or explore the issue particularly
thoroughly/poigniantly, essays on theater's impact on sexual identity
in culture, theater's general historical ability to reflect sex in
society, etc?

Beyond that, given the very broad scope of the question, I think
raising the price will make it more likely to be answered... Just my
theater loving two cents :)

Best,
Rebeccam-ga