As Caesar was technically a tyrant, he conquered new lands for the Republic, and opened the senate up to the best men in the Republic, not just the richest men in Rome.
~History forgets that Hitler was a brilliant politician, and he got Germany out of the depression it was in in the 1930's by building up the industry again. Had he not declared war, I am certain Hitler would have been declared a hero by the world, even if he did dislike Jews.