So if I work at Google which has 156k employees, everyone would be ok when 156 of my coworkers murdered my children one day? Just the cost of working in an organization this size!
50k people work at my university. So 50 of them are about to sneak into our house and murder us?
Think about how stupid that line of thought is. If this was true for any organization we would have terrorist attacks all the time. We couldn't have a society with these numbers.
No this isn't what an org of this size should do.
These numbers are astronomical. UNRWA was infiltrated and its special access and privileges were to commit mass murder. Unless it radically changes it shouldn't exist anymore.