Is Rainforest Action Network (RAN) a Grassroots or Astroturf Organization?

Is Rainforest Action Network (RAN) a Grassroots or Astroturf Organization?
Rainforest Action Network is definitely grassroots, you ask the reason for that? Well, Rainforest Action Network speaks for itself. If you observe the name of the organization the second word is action, in my book it means taking the iniatiative in whatever mean neccessary.They support the rights of their inhabitants through education and much more. What caught my eye was the grassroot organizing they use within the organization.I do not think that it is astroturf, because there is no huge company behind the scenes like a local advocacy group. They have human rights groups located in different states and countries, this organization is based on strict campaigning. They even have classes where they teach students how to become an active role in protecting the earth. Grass roots is a straight forward term, which means individuals getting together pro-testing. Pictures on the website show people pro-testing and standing in front of buildings with picket signs. There is no doubt about it, RAN (Rainforest Action Network) is a Grassroot organization.