conflict theory
Here society is characterised by inequality based on social class, race, gender and other factors. I think we can simply classify this as a social problem because of much big of a problem it has proved to be in our society.
People are divided and excluded based on what they can do, who they are, or where they come from and this may result in conflict. Successful solutions to social problems like this one in particular must involve far-reaching change in the structure of society.
Feminist orientation
All variations of the feminist theory emphasize that the society is filled with gender inequality where females are the subordinate sex in many dimensions.
This can be seen as a social problem because people have different views, opinions and feelings about it. One way this can be dealt with is to make the opinions of every individual valid and attended with the same speed despite what sex they may be.