A varitey of groups. Many of the owners are notably to the right and obviously bristle at Corea's populist policies. But that's not the point- the point is that the government has been criticized for it's actions and policies towards free speech and freedom of the press. The Ecuadoran government seems to take the stance that any media outlet being critical of it is just some right wing group looking to foment revolution. I mean, Corea has referred to some of these media outlets as "coup instigators" after they criticized his handling of a violent police strike. Press without borders, which constructs a yearly index of press freedom, has dropped it's evaluation of Ecuador continuously since he was elected, and his policies are cited as the main reason for the decrease in that evaluation. Learning is fun!