General consensus? No, but it seems that nearly everything emanating from a conservative-leaning source is labeled as such. _Purely a coincidence_, I'm sure.

Who decides it? Well right now traditional media sources are leading the charge, and our benevolent Silicon Valley overlords are working feverishly to help out. Media and tech companies are both filled with people of a left-leaning persuasion. Again, pure coincidence I'm sure, and we all know these people are above injecting their own personal biases into protecting us from fake news, so we're in good hands.