Maybe they used "exterminate" instead of "kill".
Assuming there was a protest and an Arab mob crashing it, it was probably that ol’ Jihadi singalong, “Itbakh alYahood” which means “kill the Jews” or according to some, “slit-throat the Jews”. But in the absence of further proof beyond an A7 article with no real text, I’m beginning to suspect that the whole thing is fake news.