Unfortunately the letter presents certain regrettable factual distortions. For example:
We felt helpless when we watched students and faculty physically block Jewish students from entering parts of the campus we share, or even when they turned their faces away in silence.
The protest movement, especially at Columbia, has a highly visible Jewish contingent (especially within its leadership). If people were blocked from the protest encampments, it was plainly not because they were Jewish. And it is intellectually dishonest to claim that this is the reason they were excluded.
There have also been numerous disturbing / idiotic episodes on the part of the counter-protest movement, as I'm sure you know. Except unfortunately these have been notably more violent than most of what's been happening from the protestors' side. Just the other day for example:
https://www.nytimes.com/2024/05/08/nyregion/columbia-driver-...
Imagine being 55 years old and getting hit by a car that just so happens to have been driven by a cousin of one of one of Israel's most famous convicted terrorists (celebrated by none other than the country's current Finance Minister). Or being attacked with military-grade crowd control chemicals:
https://www.columbiaspectator.com/news/2024/01/22/protesters...
This isn't whataboutism. In order to understand this situation, it necessary the consider the whole playing field. And the simple fact that there's many profoundly disturbing episodes originating in both camps.
I'll just close with one more particularly revealing snippet from the letter:
If the last six months on campus have taught us anything, it is that a large and vocal population of the Columbia community does not understand the meaning of Zionism, and subsequently does not understand the essence of the Jewish People.
Again, no one buys the "Zionism = Judaism" equivalence. Outside the ideological bubble world that the signatories of the letter (and the driver of that car which nearly killed a 55 year-old woman for expressing her political beliefs the other day) choose to live in.