The first comment is a reference to http://mobile.nytimes.com/blogs/krugman/2014/04/18/on-the-liberal-bias-of-facts/ http://mobile.nytimes.com/blogs/krugman/201

The first comment is a reference to http://mobile.nytimes.com/blogs/krugman/2014/04/18/on-the-liberal-bias-of-facts/ http://mobile.nytimes.com/blogs/krugman/2014/04/18/on-the-li... which suggests that yes, one "side" is more tempted and prone to this than the other. The intent was to say that there is more to this than "platforms for diverse opinions ... censoring those they disagree with". Regardless of their agreement, if they just censor those that are false they will appear to have a liberal bias. This is reportedly what scared Facebook away from dealing with fake, mostly right-wing, propaganda on their platform.