This is a smear job. No Kahanist Jew would write "Gas the Arabs!" or "Arabs to Gas Chambers!" Even though every self-respecting Jew justifiably hates the Arab Muslim Nazis, no sane Jew would use the imagery of gas chambers. Such imagery invites comparisons between the Kahanist movement and the Nazis.
In fact, is the Arabs and their self-hating Jewish collaborators who are the Nazis of our generation.
The Shabak, who are the KGB of Israel, admitted after the Rabin assassination that their agent Avishai Raviv was responsible for a massive campaign of graffiti all over Israel that was intended to discredit the right-wing. The Shabak frequently engages in such smear tactics, and the treasonous Israeli news media enthusiastically joins in.