pressure group 
noun
A group that tries to influence public policy in the interest of a particular cause: an environmental pressure group...
- Greenpeace insist that they are an environmental pressure group.
- When a political party becomes a pressure group it loses its credibility.
- That's the difference between being a pressure group and a valid political party.
- freedom of religion
- freedom of speech
- freedom of the seas
- freedom papers
- freedom ride
- freedom rider
- freedom scroll
- freedomship
- freedom song
- Freedom Trail
- freedom walk
- freedom walker
- free drop
- freed-up
- freedwoman
- free energy
- free enterprise
- free enterpriser
- free expression
- free fall
- free field
- free film
- free-fire
- free fish
- free flight