More specific than that. You could describe blackmail like that.
The key characteristic of astroturfing is that it attempts to influence public opinion by presenting a false picture of the current public opinion. It's both of those things together that make something astroturfing.
The key characteristic of astroturfing is that it attempts to influence public opinion by presenting a false picture of the current public opinion. It's both of those things together that make something astroturfing.