A possible explanation might be an automated anti-botnet system running wild.
Israel and Palestine are an edge case with a comparatively small population and very active cyberwarfare groups, leading to a relatively high amount of bot traffic.
But even that's quite a stretch, as the error message suggests a country-wide block instead of blocking one or a few ISPs.
A lot of pro-Palestinian online activism actually comes from the Israeli IP ranges. There are two million Palestinians with Israeli citizenship inside Israel and they are free to do pro-Palestinian activism as long as it doesn't call for the destruction of Israel or supports groups listed as terror groups.
These kind of IP range blocks tend to hurt the people they intended to help.
Israel and Palestine are an edge case with a comparatively small population and very active cyberwarfare groups, leading to a relatively high amount of bot traffic.
But even that's quite a stretch, as the error message suggests a country-wide block instead of blocking one or a few ISPs.