action group 
(also action committee)
noun
A body formed to campaign politically on a particular issue: [as name]: the Child Poverty Action Group...
- He said the long term viability of the house could be worked out with the assistance of the action group and the bodies represented in it.
- The latest march is being organised by an action group formed by meatworkers and residents.
- After the first flood, we had set up an action group to campaign for flood defences for Malton and Norton.
- think group
- think-in
- thinking
- thinking-aloud
- thinking box
- thinking cap
- Thinking Day
- thinking distance
- thinkingly
- thinking machine
- thinkingness
- thinking-out
- thinking part
- thinking-shop
- thinking substance
- thinking-through
- thinking time
- think-man
- think nothing of
- think nothing of it
- thinko
- think on
- think on one's feet
- think outside (or out of) the box
- think piece