You belong in prison before you kill someone.
In many states, an actual law degree is not required to take the bar. Passing the bar is the primary requirement to becoming a lawyer. However, taking the bar exam requires a law degree or several years of "law study". Generally speaking, you need a law degree to take the bar in the United States (4 or so years of Law Study can sometimes substitute for the degree).
In the United States, the basic 3 year law degree is called the Juris Doctor or JD. Think of the JD as a basic law degree. Entering a JD program generally requires the completion of a Bachelor's Degree (not always).
After your JD, you have a few options for further specializations. You can do the Master of Laws (LLM) or Doctor of Juridical Science (SJD). The LLM and SJD are specializations.
Basic progression for lawyers:
Bachelors Degree (Any field is usually acceptable)
Bar Exam (You are a lawyer once you pass the Bar)
Master of Laws (LLM) or Doctor of Juridical Science (SJD)
Hope that helps.