The evolution is just going on at all the levels.
Genes, for example, may loose everything by the actions of their products. We can decide and abandon the DNA, one day. But even smaller actions we already do, inflict the genes.
Just every level is susceptible, groups as well. Pinker is not right this time.
See, that's the sort of idea that seems like it must be true, and you can make out that it's a coherent position, but it really isn't how evolution actually works. They did in fact go and look.
This essay at Edge touches on a few possible meanings for the term "group selection." Pinker argues that as a form of memetic theory it has no explanatory power, and that group selection for genes does not fit the evidence. He focuses on humans with some mention of insects that live in hives. So the essay doesn't seem surprising, but it does seem rather Hansonian.