Invoked: Anjali (who comes from a rich Brahmin family) meets and falls in love with Bhulwa (from a poor, working-class family).
Defied: Anjali and Bhulwa carry on a Secret Relationship, or move someplace (such as America) where they can get married regardless of their stations in life in their homeland.
Deconstructed: Someone is going to be locked into expectations regarding who to marry and what career path to take, regardless of what he/she actually wants. Also, just because someone is born into a family that does XYZ profession doesn't necessarily mean he/she is suited for that job. It's a conflict between tradition and modernism, between individualism and collectivism.
Reconstructed: Less emphasis is placed on social class and family than talents. There is more social mobility as a result.