We probably don't need to remind you what Kristen Stewart did to incur the general public's displeasure. She cheated on Robert Pattinson during the peak of the 'Twilight' pair's fame, thus breaking the hearts of thousands of fans who loved them together. Since then it's appeared that she can't do anything right, being criticized for frowning too much, taking herself too seriously and dating too many people. Her open dislike of the tabloid press results in negative articles being written about her, and so her public profile suffers.
Stewart doesn't really care about any of that though, and in reality, she seems level headed and likable. She owned up to the error of having an affair while she was with Pattinson, apologizing for it profusely and repeatedly. She works for Oxfam and the Red Cross whenever she can, and has also raised awareness of LGBT issues by coming out as bisexual.