This is a link to an interview of Bernie Sanders conducted by Andrea Mitchell on MSNBC. As Vanessa has mentioned, politicians can be hard because they have usually been coached to some degree by experts.
I was made aware of this from a Facebook post that quoted him refusing to attack Hillary Clinton on air. I wanted to see if it was possible to detect him lying. I'm very new to body language detection so I hope others join in. The video is 13 minutes long, but I won't analyze the whole video, for now.
In the first 15 seconds she starts off easy, mentioning his rise in the polls. He sits fairly still, but motions forward a lot, lots of nodding. Lots of micro smiles and even full smiles and nodding, he is very pleased with this news.
:26-:28 As screen returns to Bernie, I catch the tail end of a headshake no. He disagrees with her. He says "I don't think so Andrea" immediately after with an eyebrow raise. Surprise at the question maybe?
1:05 - First visible hand motion.
1:08 - "Dominated by billionaires buying elections" Another subtle headshake no.
1:18 - He talks about climate change and mentions the Pope. Slight raising of the eyebrows.
1:23 - "One of the great international issues we have to address" Another headshake No.
1:38 Contempt at the attacking Hillary Clinton question?
1:42 He's been asked if he is prepared from the onslaught of Hillary attacking him. He smiles, nods his head, then briefly shakes it no. Very contradictory.
1:58 "Introducing legislation when I get back to Congress" Another brief headshake no.
2:07 - Another headshake no as he says this is will be a huge issue that will be attacked by the drug companies.
I feel like I am overreading this guy, but he is so firm and nodding and direct in his other statements that I feel these subtle headshakes have meaning.
2:36 - As he answer this entire question about private email servers and Hillary, he does not shake his head once. This is likely an honest answer, and I think confirms my previous red flags on the other head shakes.
2:43 As he finishes answering, he shows what I think is a sadness microexpression.
2:49 Jeopardized National Security - Shakes head no.
Around the 3:00 mark, as he answers this question you see his hands again.
3:42 Contempt again? I think he's getting tired of being asked about Hillary Clinton.
3:46 - He shakes his head, he thinking something he doesn't want to say. He skips a beat before answering.
4:39 As she starts talking about him, he begins nodding, and even says "Good" followed by a funny expression I can't read.
As he answers this question Over the next minute, I feel that he's being honest here.
That is my read on this interview. I can't wait to hear other's thoughts on this one.