Why is the right to a jury trial guaranteed by the Bill of Rights? Why might someone choose not to have a jury trial?

The right to a jury trial guaranteed by the Bill of Rights to prevent oppression by the government.

Explanation:

This reflects a clear judgement on which way a law should be carried on, a law is enforced and how the justice is given. The criminal defendants can seek the right to jury to "prevent oppression by the government" and raise their voice against any misdoings.

A defendant may arrive before the court and seek justice if he or she thinks that he has been going through injustice. It is most important fundamental rights in America. All the defendants are allowed to the right to jury trial.