Evan,

>I get it. It is an opinion.

Based on years of experience in the field, I believe it's more like a highly-informed expert opinion. :-)

>I've seen this defence before, the old "I could spend some time, but I won't".

Yes, that's usually used when the continual response from the other side is "can you prove that?" or "upon what are you basing that conclusion?" or something similar. The old "wear them down until they get frustrated, then declare victory" strategy.

So, how about YOU prove that the reporting and editorializing of the major US media is more conservative than liberal?