Or are we? Harry's Place notes that under the prevailing logic employed by many who embrace a hard distinction between "anti-Israel" and "anti-Semitic", it would be quite logical to deny that the bomb plot was anti-Semitic at all -- or at most, was only incidentally anti-Semitic. Though recognizing that their advocacy is taken to be hostile by a disproportionate amount of Jews, and their policy proposals would have massive disparate impact against Jews, the anti-Zionists declare that because their advocacy is fundamentally targeted at Israel, and not Jews, there is no anti-Semitism present. Jews who oppose Israel are quite welcome.
These bombers, too, apparently saw their agenda as politically motivated as against American military actions in the Middle East. And in addition to targeting the synagogues, apparently the terrorists also planned on attacking American military jets. Jews were targeted not necessarily qua Jews, but in their supposed capacity as supporters of these putatively unjust policies.
But if the attackers are perceived to be driven by anger over Israel, then for many anti-Zionists who share that premise – who perhaps hate Israel themselves and recognise the urge to act on that hatred, but would never do so – then the firebombing of a synagogue is a crime, for sure, but not a hate crime; there is no bigotry, just a mistaken politics; no antisemitism, no need for anti-racist solidarity and certainly no need for Zionism and Israel. I am yet to see anyone try to explain the attempted bombing of a synagogue in New York as an understandable, though misguided, expression of anger about Israel. But I won’t be surprised if someone does.
I haven't seen any reporting on the attackers' views on Israel, as opposed to American foreign policy more generally. It wouldn't surprise me if they were quite opposed, but it really is irrelevant for the point here -- replace "Israel" with "America" and it works quite as well (and with that modification, the claim has been made).
The crime is still a crime, but it isn't a hate crime, because the problem wasn't the underlying politics (which are conceded potentially legitimate) but rather either the over-extension or misattribution of it. This framework, with its focus on perpetrators instead of victims, pays little heed to the effects of these sorts of crimes and plots as Jews experience them. When folks are trying to bomb our synagogues or rocketing our towns or promoting genocide of our people, the precise political location of the attackers is not what is on our minds. There is a degree to which Jews feel abandoned in the face of this hate by the left, and the reason is that the left hasn't quite come to the consensus about whether this counts as hate or not.