@Ludwig
Only because I know what your posts are like can I see that as of humourous intent. The organisation themselves might view it as a false attribution, to make them look bad. Which makes you label-able.
@Svejk
The article is specific in a way you somehow avoided:
"Against the backdrop of rising anti-Semitism in Hungary, France and here in the UK (as demonstrated by the European Jewish Congress poll just last week) this is once again a battle that goes beyond Britain’s borders. A battle that we cannot win by retreating from the EU and having a conversation with ourselves."
The Svejk character was (Austro-)Hungarian. It would be rude of me to enquire as to your self-identified nationality or ancestry. All the same, was Hungary the trigger-word which inspired this thread?
That aside, "anti-Semitic if…" is in exactly the same form as "redneck if…", don't you think?
Guilt is built into the question, as in "Mr X, when did you stop beating your wife."
Fears of future European war are not entirely irrational, that part of the argument is sound. The assertion of rising anti-semitism is sound - activities of far-right politcal groups are on the record, so that is sound, too. Fears of a second holocaust: if anything I share them (unemployed and semi-useless, due to a health problem) but no extremists are stupid enough to announce plans for such horrors.
The inference that EU membership "prevents war" requires further thought. Britain can't be the plucky island on its own. Even in WWII, it never was - we were dependent on food supplies from the empire (which we no longer have) and from the US & Canada. We still manufacture things but only in a hanful of cities. Repeating WWII efforts would mean a couple of years' dependency on Can/US manufacturing.
In short, we're in no position to be the aggressor and we'd be a few years slack in becoming an effective defender. We are a soft target but with nukes.
If Germany's wealth is mainly due to trade, they can't be aggressor without shooting the pooch.
Finally, aggression by any other European country would likely be stamped upon by the US. If Russia tried anything along those lines, we'd be on edge about it. (A discriminatory attitude but, hey, they're a kleptocracy and we don't want their latest acquisition nearby).