Certainly shocking I agree, as are many things outside our own culture and current values.
We are all conditioned to think and act as though our own cultures are THE 'compass' for all human behaviour. Yet even what we did as a culture within recent generations would be unthinkable now. A radio five-live debate this morning highlighted how we view Ukraine/ Russia conflict is somewhat dependant on how far back we look at the history of both countries; and this is also true in most of the other conflicts worldwide, with Palestine being no exception.