This cartoon shows otherwise:
The figure on the left is a famous symbol of Palestinian Arabs by cartoonist Naji al-Ali who died in 1987. I don't know if this is an old cartoon of his or a more recent one using his character.
Either way, it is a powerful indictment of Arab hate towards their Palestinian "brethren."
I found it on the Facebook page of the Action Group for Palestinians of Syria. 9 more Palestinian Arabs were killed in Syria last week (during Eid) and no one really cared.
(h/t Ibn Boutros)