Stir the pot
According to the Phrase finder:
"What does the phrase "to stir the pot" generally mean?
Deliberately provocative, yes, but not necessarily maliciously. Picture a pot of soup. A lot of ingredients have settled to the bottom, out of sight, until stirred. Metaphorically, a lot of issues/resentments/obligations can drop out of sight when nobody mentions them. One can "stir the pot" to bring issues to the surface, sometimes with malice, but sometimes merely to create awareness and effect change."
Why do I blog this? saturday morning search, when listening Prince Buster.