Title explanation

possibly The look on Adi's face as he watches the video of the interviews. There is a lot of focus on that throughout the film.

I think they are also tying in the guy sells eyeglasses and something horrible happened in the past there and it's not talked about and encouraged not to talk about it.

If you look at Adi, he usually pauses at the end of a sentence when he's talking to the killers and just stares at them with a look of silence. I thought it was probably that.