Is the Old Testament a guide to brutal dictatorship?

that would be kind of a difficult argument to back up, considering the long speech G-d gives in the book of samuel, warning them that if they choose to appoint a king over them, it will result in misery and brutal dictatorship and oppression, because that is what kings do to their people. unfortunately the people ignored G-d's warning and chose to appoint a king, and all the injustices G-d said a king would inflict on them happened exactly as they were told it would.