Agree that threats must be taken seriously.
Seems as if the MSM is not mentioning the possibility of Islamic terrorism, suggesting that it is "right wing" antisemitism behind these threats. Seems also as if the JCC administrators interviewed about the threats aren't letting out publicly about whom they might suspect.
These threats are federal criminal acts, so here's hoping and praying again that the FBI nabs the culprits sooner rather than later.
That is very possible. While I don't at all dismiss "right" wing antisemitism, perhaps better described as non Muslim antisemitism since whites are antisemitic at the lowest rate in the US, Hispanics much greater and, sorry, blacks the highest. And Radical Muslims, beyond the ongoing hate speech, don't telegraph their attacks in advance. The just do it, then take credit.