Since Palestinian Arab groups celebrated the murder of Jews praying in Jerusalem so recently, and Hamas students even made a music video about that attack, obviously killing Jews is not considered a bad thing for these terrorists and their supporters.
But there is something that they do consider a bad thing: the idea of Jews moving to Israel. And when attacks on Jews i Europe prompt more Jews to consider making aliyah, the Arabs get very upset.
Dr. Hanna Issa, Secretary General of the Islamic-Christian Committee to Support Occupied Jerusalem and Holy Sites, condemned Netanyahu's and Lieberman's calls inviting French Jews to move to Israel, saying that they will all be moved into the territories. His statements were reported in dozens of Arabic media outlets.
But it is not only living Jews who enrage Palestinian Arabs when they move to Israel. Dead ones are just as bad.
Supreme Islamic Council head Sheikh Ekrema Sabri railed against the Paris Jewish victims being buried in Israel. he called the idea "unacceptable" and characterized it as "a direct attack on the city of Jerusalem."
Adnan Husseini, who calls himself the "governor of Jerusalem," said that the idea of bringing the bodies of Jews to be buried in Jerusalem is "an Israeli superstition" that reflects the Israeli government's "tension and confusion and inability to deal with political issues" they face.
By coincidence, one of the stories from this date in 1948 being tweeted out by 1948 War was this one, that explains how things really haven't changed:
Arab Nat Com Saleh Ed-din Abbasi says Haifa Arabs are 'now united, paying with precious blood to keep country purely Arab' [15 Jan 48]
— 48 Arab Israeli War (@1948War) January 15, 2015