I have noticed that more educated people do seem to be more apt to take a party line. I wonder if part of the reason for this is actually because they consume more propaganda than less educated people. If you are being educated and responsible in the run up to the war and you read the New York Times and watch Meet the Press and so on, the only effect would have been to be more inculcated with lies and BS.
The "uneducated" who are less exposed are less apt to have their brains so washed away. I think it takes significant exposure to a lot of different media and narratives over a sustained period of time to develop an awareness of how untrue our news really is and how to read between the lines not to find out what's true, but what probably isn't. The average "educated" person might read a few news articles a day and watch the evening news. That doesn't cut it.
I think a factor is that critical thinking is a skill that has been eroding in society across all levels for quite some time on. Even if more technically savvy, the "educated" are not better prepared to resist propaganda than the "uneducated".
What the first group is, is more comfortable in processing and manipulating abstract ideas. This factor makes you more vulnerable to propaganda because of the natural tendency to dismiss data that does not confirm your working hypothesis as "noise". I am pretty sure highly focused propaganda will exploit specific cognitive biases of the "educated" too.
The second group thinks in a more concrete fashion, so it is harder to dismiss conflicting evidence for them. So, they will get a gut feeling that there is something wrong with the hypothesis/propaganda, though they not necessarily can pinpoint what that might be. Attempts to make sense of these strange Rorscharch patterns provide the raw material for plenty conspiracy theories, too.
The "uneducated" who are less exposed are less apt to have their brains so washed away. I think it takes significant exposure to a lot of different media and narratives over a sustained period of time to develop an awareness of how untrue our news really is and how to read between the lines not to find out what's true, but what probably isn't. The average "educated" person might read a few news articles a day and watch the evening news. That doesn't cut it.