There is no inconsistency in being averse to racism but not averse to speciesism.
On reflection, this seems wrong. The fact that some in-group/out-group behavior is rational does not mean that in-group bias is rational. To put it slightly differently, killing a Klingon is wrong iff killing a human would be wrong in those circumstances.
On reflection, this seems wrong. The fact that some in-group/out-group behavior is rational does not mean that in-group bias is rational. To put it slightly differently, killing a Klingon is wrong iff killing a human would be wrong in those circumstances.