have you ever been to a community theatre? 
No, I haven't!  What goes on there?
they do some plays and community theatre usually promote ideas like gender equality and human right and democracy
That sounds awesome!  I love going to plays!
and community theatre contributs to the social capital of community and develops the skills, community spirit 
You can never have too much community spirit!  It's great that communities get together and do things like that!
of their own. Many community theatres are successful, non-profit businesses with a large active membership and, often, a full-time professional staff. Community theatre is often devised and may draw on popular theatrical forms, such as carnival, circus, and parades, as well as performance modes from commercial theatre.
Community theatre is understood to contribute to the social capital of a community, insofar as it develops the skills, community spirit, and artistic sensibilities of those who participate, whether as producers or audience-
members. It is used as a tool for social development, promoting ideas like gender equality, human rights, environment and democracy. Most of the community theatre practices have been developed based on the philosophy of education theorist Paulo Freire's approach of critical pedagogy in theatre and implementation techniques built by Augusto Boal, known as Theatre of the Oppressed. Freire's approach attempted to stimulate social change by encouraging the audience to build capacities for critical thinking through participation in active dialogue. The participants would identify issues of concerns and discuss possible solutions