Tyrants are people who use power or authority in cruel, unjust, or harmful ways.Remember that all through history, there have been tyrants and murderers, and for a time, they seem invincible. But in the end, they always fall. Always.
“Voldemort himself created his worst enemy, just as tyrants everywhere do! Have you any idea how much tyrants fear the people they oppress? All of them realize that one day, amongst their many victims, there is sure to be one who rises against them and strikes back!”
― J.K. Rowling, Harry Potter, and the Half-Blood Prince