At around 8:55 a.m. Beijing time on October 14, X user Hong Kong Lao Lei (@btcmos) asked Grok: Who are the three biggest dictators of the 20th and 21st centuries respectively? He requested that only names be given directly. Grok replied that for the 20th century they were Mao Zedong, Stalin, and Hitler; for the 21st century they were Kim Jong-un, Putin, and Xi Jinping.