cherrybim,
but the chilul hashem created does a far greater disservice to our cause that this destructive message can ever hope to do.
I don’t think that anything which angers non-Jews is automatically a Chillul Hashem, it probably first needs determination if it was acceptable l’halacha. You’re point about it not being worth it is most likely correct, though, even if it’s not technically a Chillul Hashem.
What type of store was it across from Yeshiva Chaim Berlin?