I just remembered an incident that happened in the 1970's or 1980's that involved political activism related to theatre itself. If I recall correctly, a group of performers engaged in civil disobedience over the planned demolition of a historic theater. Several were arrested. Christopher Reeve told a TV reporter that he agreed with the demonstrators, but couldn't bring himself to get arrested. I don't remember who else was involved.
This was definitely a non-partisan issue.
Audrey
Audrey, the Phantom Phanatic, who nonetheless would rather be Jean Valjean, who knew how to make lemonade out of lemons.