People can only blame themselves because they have no control over themselves and their emotions.
How does the average child get access to a gun? Their parents might have one in their home, or might see someone else in their household with one. Once they get access to that gun, they seem to think that is it cool to have one and then want to show it off. Many of the older kids seem to think it is a form defense. To protect themselves from bullies and other people who treats them badly. Teens seem to think and feel that having a gun will solve all their problems. In reality, having a gun and firing it somebody doesn't solve the problem, its only creating a bigger one. So why did the two boys go on a deadly rampage in their school? They were outcasts in the school, talked about and bullied, and shunned from their fellow classmates. They probably got fed up with and decide to take matters into their own hands. The simple fact of the matter is, America needs people control. .
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Racism has become a big problem in America in the past century. Having segregated schools, and water fountains, many blacks and civil rights leaders demanded for a change. Blacks would undergo a major struggle to be treated equally and fairly and to get respect. Blacks in the entertainment business broke all color barriers but when they stepped out into the real world, they were the average person out on the street. With the formation the KKK in the late 1800's, racism wasn't truly geared to the blacks. Whites who were in this organization hated people that weren't their skin color. But they also hated Jews, gays, basically someone who wasn't like them. They would go out on killing rampages against anyone who wasn't like them, or did something that they didn't like. That is still an issue today.
One example of racism is in the book, "I Know Why the Caged Bird Sings" by Maya Angelou. In this book Maya describes her life growing up as a young insecure African American girl in the South during the 1930's and in California in the 1940's.