It's probably a good idea to pop their bubble and make it clear that you are not on their side and their US citizenship has been revoke. Make any crude handcrafted sign and write "free Palestine" on it and go protest in front of the synagogue.
This is our chance to inform Jews we would like them to stop draining our European countries' resources for genocides and they are not legal citizens and have no right to be here.
Keep your kids safe, we know they're known for killing children and raping them. Keep your guns loaded in case you need to defend yourself against one of these radicalized Jews.
Here is a telegram documenting Israel's terrorist campaign in the middle east. War footage. I think they show the dead children Israelis have been and are still killing https://t.me/Middle_East_Spectator
They show the bombed churches, hospitals and schools.
UPDATE: /pol/ is shadow banning this PSA public service announcement if you post it.