Astroturf

verb2

1. •
   To cover with an artificial grasslike material.

   • But what was there left to Astroturf? The sitting-room? Hugh's bald patch? — 2002
2. •
   To fabricate an impression of political support for an agenda.

adjective1

1. •
   Of a group created by a larger organisation (especially a corporation or political party), but presenting itself as a grassroots organisation.

noun1

1. •
   A campaign designed to appear like a genuine popular (or grassroots) movement, that does not have such popular support.

noun1

1. •
   A synthetic material used in sports grounds as a durable substitute for natural grass.