Now that the dictionary definitions are out of the way, I share with you where I learnt about this framework:
it was a higher education class titled - 'Rehearsals in Anti-racism', and below are the highlights of what the instructors of the class - dr. gloria j. wilson & K. Lynn Robinson shared as their scholarly interpretation of the same as - 

• A space for deep learning & un-learning
  - through an emergent curriculum supports the needs of the group

• Implementing theory into practice through artistic methods
  - a way to experience theory through an embodied experiences / workshops

• Doing what do we in the arts anyway i.e., rehearse
  - practice again and again, take risks, try new things together and as we rehearse together - not being afraid of stepping on toes, while also knowing that the stepping on toes was not intentional

… & its framed this way because this work does not need another book club.