The O. J. Simpson murder case (officially People of the State of California v. Orenthal James Simpson) was a criminal trial held in Los Angeles County Superior Court. Former National Football League (NFL) player, broadcaster, and actor O. J. Simpson was tried on two counts of murder for the June 12, 1994 slashing deaths of his ex-wife, Nicole Brown Simpson, and her friend Ron Goldman. (Source: Wikipedia)

A civil jury considered that he caused the death of his ex-wife Nicole Brown Simpson and her friend Ron Goldman.

A criminal jury was unable to find beyond a reasonable doubt that O.J. committed first degree murder.

Considering that:

In a criminal action, the standard is "beyond a reasonable doubt," meaning that in the criminal court, the case against the defendant must be completely proven, uncontroversial, no doubt remaining about the fact that the defendant committed the crime, or the defendant must be acquitted.

This is a much higher standard required, comparatively with a civil action, considering that the burden of proof in the civil case is the preponderance of the evidence, which is much less than required in a criminal case. A civil jury can find by a preponderance of the evidence that the defendant wrong act conduct results in civil liability.

Is the former football hero O. J. Simpson a murderer?

Answer the question considering that the standard of proof is based on a "balance of probabilities" test (Civil Proceedings) or "Beyond a reasonable doubt" (Criminal Proceedings).

1- Act like a plaintiff or a defendant to justify your answer for the civil case, to determine whether the defendant is liable or not.

2- Act like a prosecutor or a defendant to justify your answer for the criminal action, explaining the reasons to consider the defendant guilty or not.

Justify your answers for both proceedings, civil and criminal.