the.com/iconoclast

Breaks the sacred thing not for chaos, but because they actually believed in something better.

means A person who attacks or rejects cherished beliefs, institutions, or symbols that most people treat as untouchable.

from From Greek eikon ('image') plus klastes ('breaker'), rooted in klan ('to break'). The word's history is literal: it comes from the Byzantine Iconoclasm of the 8th–9th centuries, when religious authorities ordered the smashing of icons — holy images of Christ and saints — arguing that depicting the sacred was itself idolatry. So the first 'iconoclasts' were quite literally icon-smashers, acting out of religious conviction, not vandalism. Only later did the word drift into its modern sense: anyone who breaks with orthodoxy or tradition, image or not.

original meaning
literally smashed religious icons, 8th century Byzantium
irony alert
today's iconoclasts often become tomorrow's icons
not rebellion
rebels reject rules, iconoclasts reject false idols
requires conviction
mere contrarians lack the underlying belief system
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