[edjrage]

Most importantly, being anti-mask can't be attributed to a clear genetic variable (although I suppose there might be some very weak correlation), and natural selection takes way, way longer than a human lifetime to create noticeable results anyway. Not even getting into the fact that there's much more to evolution than natural selection. It actually scares me that supposedly "pro-science" people have such simplified views about it.

[Misdicorl]

Note that the timescale for seeing results is related to the selection pressure. You can see very fast results (e.g. a single or few generations) if the pressure is extraordinary.

AFAIK this only happens via guided intervention (see humans selective breeding of crops, dogs, foxes, etc)