Criminal justice is the study of law and how it affects both the criminal and those who enforce the law. The scope of criminal justice is broad, and can range from things like police officers, homeland security, prison corrections officers, judges, lawyers, and criminal investigators, to name a few. The main goal of those pursuing a career in criminal justice is to be sure that all citizens are obeying the law, and that those who do not are brought to swift and fair justice. Everyone involved in this field makes an important contribution to making sure that our country and our streets are safe from crime. The field also includes the study of various crimes, their classifications, and what types of sentencing are typically involved with each crime, such as jail time, fines, and other forms of punishment. You can earn your degree in criminal justice online by taking e-classes, allowing you time to be able to maintain your already busy schedule while learning about all aspects of criminal justice.