I have referred often to what I call a cultural bubble. This is the closed cultural environment in which many liberals and progressives reside. Ironically, the intellectuals venture out of the bubble less often than do the rank and file.

The media and liberal writers' choice of propaganda offers an interesting example.

A propaganda tactic that you will see almost weekly out of Barack Obama's Washington is what I call the "attack twist." It is an incredibly simple maneuver, but one that is very effective.

In the attack twist, when you are accused of some crime or indiscretion, you simply attack your opponent as being criminal to point it out.

For example, suppose someone in the Obama regime did or said something blatantly racial. When this is pointed out, the person or group that brings attention to the racial act is called racist for bringing it up.

The media propagates attack twists so casually that it appears they are not even aware of what they are doing. There is one exception that I will mention later.

Eric Alterman is a liberal apologist. He has written several books, each of which demonstrates nicely what he claims to be denying. His book titled "What Liberal Media?" gives example after example of liberal media bias while patiently explaining that there is no liberal media bias.

Alterman is a very public testament that progressives live within a closed cultural bubble with no external comparative frame of reference.

In his latest effort titled "Why We're Liberals," he evidently feels so secure within his environment that he gives an almost perfect example of the attack twist. He admits that progressives played the race card in the past, but then seems to suggest that conservatives are playing the race card to point it out.

I probably should not have used the example of race to explain the twist because the issue is complicated by a world view accepted without question by a small but influential part of progressive America.

Liberal leaders, academics and much of the media separate Americans into four groups when it comes to any mention of race.

The first group is made up of members of racial minorities. Progressives allow this group to make any racial statements they wish because, by definition, they cannot be racist. Any notice of the racial nature of statements from this group is labeled as racist.

Note the resignation of Obama adviser Van Jones, who reportedly once said, "You've never seen a Columbine done by a black child." But it was not until it was made public that he supported a movement that accused President George W. Bush of being complicit in the 9/11 attack that he resigned.

Even then he accused critics of mounting a "vicious smear campaign" against him. Here we have the attack twist without any mention of race even though race was the substrate that ran through it all.

The second group is composed of non-minority liberals. They, by definition, cannot be racist. So we have Joe Biden saying of Obama, "I mean, you got the first mainstream African-American who is articulate and bright and clean and a nice-looking guy."

According to progressives, Biden cannot be a racist because that would be impossible, and anyone calling attention to his statement is a racist for bringing it up.

The third group is the great unwashed. This is everyone not in group one, two and four below. Any notice of racism in the above groups is automatically proof positive of the racism of members of group 3.

This group is evidently overflowing with racists. It has to be.

Otherwise, the racial pimps who milk all charges of racism for all the publicity and money they are worth, affirmative action advocates and the diversity industry would be out of business.

Members of the fourth group are effective spokespersons on the right.

Rush Limbaugh lost his job as an ESPN commentator by saying that a football quarterback was "overrated. … What we have here is a little social concern in the NFL. The media has been very desirous that a black quarterback can do well."

Limbaugh simply said what almost every athlete and media person in the country already knows, but conservatives are not allowed to state what everyone knows without a ritual expression of horror which justifies the next vicious attack twist.

The outrage here is usually phony, but as said of a good crisis, why let a good twist go unused?

And yes, you will have the attack twist used against you if you dare bring it up.