The "smirk"

[Bill Chapman]

"looks like"

Yep, #2

Not #1
Not #3
Not #4

#2
Get it, Ray?

[Charles Collins]

"looks like"

The bus transfer, that LHO had in his pocket, makes your opinion irrelevant.

[Charles Collins]

Charles, Oswald's smirk is accompanied by a self-satisfied look in his eyes, while the look in Mommy Dearest's eyes is one of sadness. She's not smirking; she looks to be about to cry.

There's a guy in my tennis club who smirks all the time: A very very critical person who seems to consider himself superior to others.

Yes, I agree, the eyes also are a part of the body language. I think it is also a look of defiance in the eyes.

[Bill Chapman]

A smirk could mean you think you're smarter than everybody. And expect to get away with everything because there's no time travel or you're not caught on HQ film/audio.

Sociopaths, all three of 'em

[Bill Chapman]

Yes, I agree, the eyes also are a part of the body language. I think it is also a look of defiance in the eyes.

Agreed, and 'defiance' describes the look even more completely, in that it could be argued that it sums up Oswald's entire backstory

[Charles Collins]

Agreed, and 'defiance' describes the look even more completely, in that it could be argued that it sums up Oswald's entire backstory

Yes, and we can only get a sense of it from a few snapshots or a short video. The people who were there when he was being questioned used similar adjectives, like arrogant, etc.

[Anthony Clayden]

What strikes me from the clips I've seen of Oswald is how polite he is.
He never used profanities, always added sir to yes and no answers.
He is calm and appears neither agro or truculent at all in the times he is seen on camera during the interrogation.
Maybe he was different away from the camera.