poster child
Noun
Meaning
a child afflicted by some disease or deformity whose picture is used on posters to raise money for charitable purposes
Source: WordNetSynonyms
Antonyms
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Examples
I realize I will always be the poster child for police brutality, but I can try to use that as a positive force for healing and restraint.
The current regime is, by any measure, the standard-bearer and global poster child for militancy, brute autocracy and corruption. If they are in fact students of my father, his ultimate act of refusing suppressive bloodshed in favor of exile should be their test.
I did not set out to be a poster child for anything. I saw a mountain. I wanted to climb it.
Even Christian-the poster child for "smartass"-looked grim.
What I did next was so impulsive and dangerous I should've been named ADHD poster child of the year.
Bill Gates has become the patron saint of philanthropy and the poster child of rebirth, and from what I can tell, rightly so.