It could be norms are different but people aren't. Clearly it is an American norm to smile, but a lot of Americans complain about it. Sometime pressure to smile

It could be norms are different but people aren't. Clearly it is an American norm to smile, but a lot of Americans complain about it. Sometime pressure to smile is interpreted as racism or sexism. I was recently told that I only smile when I'm talking to a particular person at work. It wasn't hostile, but it did imply that I don't smile "enough" and that I haven't noticed other people smiling more.