Lol. Read my post again :).
They didn't have much use for the modern IRA either, even though they didn't care for the Brits.
No. There's been a very bad movement during the last, oh, thirty years or so - maybe a little longer. First, the Irish insurrectionists are mostly also leftists, if I remember this stuff. And over the years they have been co-opted into the "Palestinian cause", and the antisemitism you see is jihad, in a lot of cases.
That has led to a lot of these guys who know their bombmaking being sent around on loan to groups like Hamas. Actually, I have a videoclip which probably shows an attack, in Israel, by an Irish "loaner". I'll put the thing up on our site when I get around to it.
If you limited it to IRA and their supporters, I wouldn't have had an issue. IRA has always been no friend of Jews, or conservatives, or Catholics who are in the way for that matter.