Do you feel that white people generally have dry reaction/less expressive compared to black people?

Don’t get me wrong, I’m not trying to label white people nor am I endorsing racism. I only ask what you personally feel about the thought-to-be-typical behaviour of certain group of people.

With that being said, the reason I ask such a thing because this footage shows us that white people tend to act dry toward other people’s casual/funny advances, while on the other hand, black people have open expression and warm toward the same advances. I personally have been feeling this from personal observation and that footage only serve to strengthen my suspicion. Of course there could be individuals that serve as exemption but we’re talking about people in general here and what you personally feel about the situation. Do you feel that way too? If so, do you have any idea of what could’ve caused their dryness?