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.
- Castile
- Castile soap
- Castilian
- Castilla-La Mancha
- Castilla-León
- casting
- casting couch
- casting director
- casting vote
- cast iron
- castle
- Castlebar
- Castle, Barbara
- castled
- Castlereagh, Viscount
- castles in the air (or in Spain)
- cast light on
- cast lots
- castmate
- cast net
- cast-off
- cast off (or cast something off)
- cast one's bread upon the waters
- cast one's eyes over
- cast one's mind back