And as I've said ad nauseum, that doesn't mean we aren't wonderfully unique animals (cough-Gene-cough), nor does it mean we have warrant to be offensive and dismiss social norms (cough-Noah-cough). What it does mean is that we can understand why we are the way we are by realizing that we are just highly evolved animals.
And one of the great things that we animals do is better ourselves through social behavior. Human beings are both particularly adept at constructing functional social systems, and the possessors of traits (abstract thought, language) that make us particularly likely to have functional social systems inadvertantly emerge. And of course there's no strict dividing line between the two.
Anyway - social behavior is an animal thing. You need individual agency to really make the collective action that we call "social behavior" both possible and meaningful. Here are some fun videos of this characteristically animal thing we call "social behavior":
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