PLease help me correct it ! PLEASE intro paragraph

People do not realize the complication and tragedy before it comes. In both story To Kill a Mockingbird and Wolf Whistle, it have unintentionally brought out tragedy that happened due of racism and have also showed the change of people ‘s thoughts during the sadness. As a reader I realize how the character has changed, they began to understand the saturation they were in and problems they were having. Racisms are one of their main themes in the story. Character in the story treated the blacks so poorly and did not give them human rights. Bobo and Tom Robinson both black men died which I assume was the tragedy in the story. Other characters changed their point of view toward the blacks and their life though out the story. In today's society racism still exits but dedicate to the law being racist is now illegal. People seems to confuse between freedom of speech and racist which should be examine.