There is no number of foreigners that is unacceptable to sacrifice for a middle class livelihood. Anti-cop because they can imagine a scenario where a cop inconveniences them. These principles don't apply to the Waffen SS because they can't imagine a soldier personally inconveniencing them and, of course, foreigners aren't really humans.
Proximity is in fact key here. They are the actual literal perpetrators of the atrocity in question & directly observed them in action. Other people, no matter their systemic positioning, did not actually personally drop those bombs. They did, and they cannot deny that they did.