The common factors? None from Australia or the Americas. None are women. None are political individualists or free-market capitalists. So …
* Six were socialists.
* Three came to dictatorial power from military backgrounds.
* And one was a hereditary monarch.
Image source: https://www.infobae.com/america/mundo/2018/09/29/los-10-dictadores-mas-sanguinarios-del-siglo-xx/