Most mainstream newspapers and magazines publish letters to the editor and guest editorials or opinion pieces from those who disagree with the publication's rep

Most mainstream newspapers and magazines publish letters to the editor and guest editorials or opinion pieces from those who disagree with the publication's reporting or editorial opinions. What they filter out is the utter crap that invariably comes to completely dominate any unfiltered comment section that is open to the general public and takes effectively anonymous submissions via the internet.