You may have already of a lady named Anita Sarkeesian who wanted to make a video series about the five major negative tropes featuring women in video games. After several months, the first part of her first series, Damsel in Distressed, was released.
Part 2 was released on May 28.
Part 3 was released on August 1..
I thought the video series was very insightful in highlighting things in our society that some people may overlook.
Almost a year later, Sarkeesian has released another trope, Women as Background Decoration. Here's the first part. Here's the second part.