The modern polarization of the media began in the 1990s with Newt Gingrich...with help from his patron Rupert Murdoch, an ultra-conservative Australian who owned television stations, tabloids, and newspapers in the US, Australia, and the UK.
Before them, politics was still very cutthroat but not polarized along party lines.
Before them, politics was still very cutthroat but not polarized along party lines.