The old saying goes that “beauty is in the eye of the beholder," but during Tuesday night's edition of  Comedy Central's The Daily Show, the same principle was applied to hypocrisy.

Jon Stewart charged that Senate majority leader Harry Reid has criticized Charles and David Koch more than 140 times this year but said during an interview that people shouldn't “pick on” Sheldon Adelson, a gambling billionaire and supporter of the Nevada Democrat. [See video below.]

The host of MSNBC's weekday afternoon program The Ed Show has often hammered the donations to GOP candidates and projects made by wealthy conservative brothers David and Charles Koch, but does he feel the same when rich Democrats enter the political fray?

We got our answer on Monday, when Schultz happily interviewed Tom Steyer, a prolific Democratic donor who has pledged $50 million of his own money -- which will be matched by other members of “the party of the little guy” -- to support candidates who oppose the Keystone XL Pipeline and attack Democrats who support the project, which has interestingly been delayed by the Obama administration until after this November's midterm elections.

Remember the extreme discomfort Senator Chuck Schumer displayed recently when pressed by Joe Scarborough on MSNBC's Morning Joe as to whether he agreed with Harry Reid's description of the Koch brothers as "un-American?" After much evasion, Schumer finally agreed with Reid that the Koch brothers were un-American due to the political ads they are running.

It now turns out that Schumer's uneasiness with calling the Koch brothers "un-American" didn't have as much to do with casting aspersions upon their character as it had to do with something in his past that he probably knew would expose him as a hypocrite. And that something was a 2009  letter from Schumer thanking the Koch brothers political organization, KOCHPAC, for a contribution to his campaign. The letter can be seen after the jump.

Teasing an upcoming story Tuesday on a left-wing smear campaign against conservative donors Charles and David Koch, CBS This Morning co-host Norah O'Donnell proclaimed: "Battling the Koch brothers, Democrats are fighting back against the family that spent more than $150 million trying to shake up Congress." Introducing the segment, fellow co-host Charlie Rose announced that "one of the best-known families in big-money politics is once again in the spotlight." [Listen to the audio or watch the video after the jump]

In the report that followed, correspondent Nancy Cordes told viewers: "They are the Koch brothers, both in their 70s and two of the wealthiest men in America. They've been giving to conservative and libertarian causes for a long time. But now, Democrats are trying to make them public enemy number one." The headline on screen read: "Big Money Brothers; Democrats Target Billionaires David & Charles Koch."

Tuesday's lead New York Times editorial attack on the paper's favorite conservative bogeyman, the Koch brothers ("The Democrats Stand Up to the Kochs") followed Senate Majority Leader Harry Reid's political playbook, denouncing Obama-care horror stories as "phony," while approving of Reid's Senate-floor smear of donors Charles and David Koch as "un-American."

And a recent Times report on Reid's push by Ashley Parker (pictured) skipped completely the slur by Reid, who stated in a February 26 speech on the Senate floor denouncing Koch-funded ads publicizing ObamaCare horror stories: "The Koch brothers are about as un-American as anyone I can imagine."