35% of the dead kids were Jewish, while the school population was 2% Jewish. That doesn’t prove that Nikolas Cruz intentionally targeted Jewish kids but it supports that view. The other 11 kids were not Jewish, so why did he kill them? Either he was just trying to kill as many kids as possible as well as the Jewish ones, or he had grudges against non-Jewish kids that he knew there, or it was just random, and analysing the victim’s ethnicity is a waste of time. I suspect the latter.
I also suspect the FBI will take the next tip-off about an armed mental case who threatened a school shooting a lot more seriously that this warning.