An iconoclast is a person who challenges traditional ideas, beliefs, or norms. They are known for questioning established customs and often bring about change by targeting and breaking down these long-held traditions. Full definition
There are plenty of iconoclasts in the wings asking why public collections don't sell off a few old paintings, and frankly this lack of regard for national treasures gives them credence. (theguardian.com)
Back in 2006, I was staffing an information table about a new virtual public school opening up in California's Central Valley to meet the needs of young iconoclasts who wanted something different. (gettingsmart.com)
Both artists stand as iconoclasts in the history of painting and cut their teeth as countercultural figures; Dubuffet in his Parisian avant - garde and Poons in the rough and tumble downtown scene of New York in the 1960s. (lorettahoward.com)