There is no mixed message here. These are haters of Jews. There is nothing to do with Israel, Zionism or anything else. The man would scream "Death to the Jews", but he realizes that the sub text of "death to Israel" is enough. Modern Antisemitism is disguised through Anti-Zionism, and this is well established.
Police disperse hundreds in brawl in Kafr Manda, northern Israel (Haaretz)
from the article: What does 'Death to Israel' mean to you?