Being anti-Israel does not automatically make one anti-semitic, that much is true.
However, singling out Israel for criticism, while ignoring worse cases elsewhere, is absolutely 100% anti-semitism, and anyone who denies that is deluding themselves.
And about that ^ picture: I think everyone, Jewish or not, wants Israel to stop killing 'palestinians' (whatever the hell they are) but that can only happen when palestinian actions no longer pose a direct threat to the lives of Israeli citizens.
All the while there are terrorists out there with the stated aim of destroying Israel and everyone in it, as is to be found in the founding charter of Hamas, Israel will be forced into taking defensive action, as we saw yesterday, to stop that happening.