The characters combine literally and powerfully to mean “Smash the Four Olds.” It's a direct and aggressive command that perfectly captured the spirit of the campaign.
The 破四旧 campaign is inseparable from the Cultural Revolution (文化大革命, Wénhuà Dàgémìng), a decade of immense social and political turmoil initiated by Mao Zedong. In August 1966, Mao endorsed the student-led paramilitary groups known as the Red Guards (红卫兵, Hóngwèibīng), who became the primary enforcers of the campaign. The “Four Olds” were vaguely defined, allowing for broad interpretation and destruction:
In practice, this led to a nationwide cultural purge. Red Guards ransacked homes, burned books, destroyed countless temples, historical sites, and priceless antiques. Street names were changed from traditional to revolutionary ones. Intellectuals, artists, and religious figures were publicly humiliated, beaten, and persecuted as representatives of the “old society.” Comparison to a Western Concept: While some might compare 破四旧 to “iconoclasm” (the destruction of religious icons), the scale and scope were vastly different. A better, though still imperfect, parallel is the concept of “Year Zero,” famously implemented by the Khmer Rouge in Cambodia. Both represent a fanatical, state-sponsored attempt to completely erase a nation's history, culture, and memory to forcibly create a new social order. However, the 破四旧 campaign is unique to China's modern history and its traumatic experience during the Cultural Revolution.
In modern China, 破四旧 is almost exclusively a historical term. It is not used in everyday conversation in a casual or positive way.
The connotation is universally negative. It evokes strong feelings of regret, loss, and chaos. For learners, it's crucial to understand this is a “scare word” tied to a dark chapter of history, not a term for positive change or reform. For “reform,” the correct word is 改革 (gǎigé).