I have read apologies for Robespierre, Napoleon, Lenin, Stalin, Mao, and Ho Chi Minh that were practically identical to your Caesar apology. There was no end to all the good stuff those people tirelessly did for their ungrateful nations in spite of all the evil people who tried to stop them.
An association fallacy is an informal inductive fallacy of the hasty-generalization or red-herring type and which asserts, by irrelevant association and often by appeal to emotion, that qualities of one thing are inherently qualities of another. Two types of association fallacies are sometimes referred to as guilt by association and honor by association.
Show trials and struggle sessions were absent during Caesar's dictatorship, as were executions and totalitarianism. Even if Caesar's clemency were entirety motivated by power-seeking, Caesar was a Fabian rather than totalitarian executioner. But sure, lull your integrity to sleep with pithy nothings.