Alternative media are defined most broadly as those media practices falling outside the mainstreams of corporate communication. Proponents of alternative media often argue that the mainstream media is heavily biased, criticizing their pretended objectivity as a dissimulation of class biases. Causes of this bias include the political interests of the owners, government influence or the profit motive. This criticism, paradoxically, springs from observers of all political orientations. The concentration of media ownership, as well as the concentration of the publishing industry are other causes of economical censorship. While sources of alternative media are also frequently highly (and sometimes proudly) biased, the bias tend to be different, hence 'alternative'. Alternative media outlets oft