Obama was on C-Span about an hour before this. He was in what looked like a classroom. He and a few others came in carrying boxes of donuts and cider. He was wearing jeans and a leather jacket. Of course C-Span did the tight picture thing. Then Obama called everyone up to get in a picture. He turned to be in front of the crowd of about 40 young people (college age?) which let the smallness of the crowd show in the camera.
Some started taking pictures. Obama said... don't start taking selfies or I'll never get out of here. Trump has a special way of stopping a couple of times as he walks along a rope line to let a few take selfies. They feel lucky. Others do not feel deprived. I love President Trump.