Yup, 100% with the sign. Last I checked, it’s not like in order to be Jewish you have to kill children, in fact I’m pretty sure the religious texts promote love and compassion. Therefore saying “I fucking hate child killers” is not synonymous with “I don’t like Jewish people” because that venn diagram is not a circle, and child killers and sponsors of genocide are not a religious group.
I’m on the opposite side of the world to the conflict, a large number of synagogues and Jewish groups in my country are flooding to social media to condemn the needless deaths, and speak out against the actions of both Israel and Hamas on how they have both decimated innocent lives. So I’m in agreement with my local Jewish community and support what they are doing, and I don’t see how that could be antisemitic.