Why are they demonizing the Koch brothers

When you see the Socialist/Communist/Progressives waving their posters at the various rallies, like Madison, or Washington in October, you always see something about the Koch brothers being behind some vast right wing conspiracy. I have no idea who they are or what they do, but progressives just turn purple at the mention of their name, kind of like Halliburton (in which so many liberals are invested) and so I noticed this item at Volokh.

David Bernstein writes "Let’s review: It seems undisputed that the Kochs total spending on political and ideological causes is somewhere around 10–15 million dollars per year. How big a role does this money play in the American political system? Let’s start with ideological/intellectual causes. The liberal Ford Foundation spends over $400 million a year. The liberal MacArthur Foundation spends about $140 million a year. Liberal billionaire George Soros spends about $150 million a year. Liberals control the vast majority of academic positions in almost every humanities and social science department in every major university in the country, with total budgets in the tens of billions.

Even in the libertarians’ tiny corner of the ideological universe, 10 million dollars would only keep the Cato Institute running from January to April this year, and leave nothing left for any other libertarian cause or organization. So the idea that the Kochs are having some huge influence on American politics through their ideological philanthropy is grossly exaggerated, at best.

Even more absurd is the notion that the Kochs’ political contributions are distorting American politics. The Obama campaign spent hundreds of million of dollars on the 2008 election. The 2010 midterm elections cost about $4 billion. The Koch’s relative spending is like pissing in an ocean. Such spending, of course, can under the right conditions win an interest group some narrow favors, but that’s a far cry from suggesting that it can buy “a great deal of influence over the political system” in general.

No, the reason that some liberals have latched on to the Kochs as their bogeymen is that this is what demagogic political propagandists due to win support from their base. They find a mysterious, ominous-sounding (billionaires! who sell oil!–what could raise greater suspicions on the Left?) villain on whom to blame their troubles, and rouse the passions of the partisans of their sides. As these things go, the Kochs are a more innocuous villain than, say, the “Likudnik” bogeymen of the mid-2000s, or Pat Robertson’s “secular humanists who support a New World Order” of the 1990s, but it’s all the same phenomenon."

The Volokh Conspiracy » Jonathan Chait Completely Misses the Point
I figured as much. The libs are upset that George Soros who supports hundreds of leftist causes and church groups gets such bad publicity from the right, so they had to find somebody on the right who contributes to politics, but they are a drop in the bucket compared to the left's deep pockets.