What does the cryptic crossword clue "AGM? It's manipulated, sign of shame (6)" mean?

The definition is "sign of shame". The wordplay uses an anagram. anagram of AGM? + IT'S = STIGMA; definition: "sign of shame" The answer is STIGMA.

AGM? It's manipulated, sign of shame (6)

Daily Mail Cryptic #17451 | 16 Across | 2024-09-23 flower