When a populace is displaced by war, famine, genocide etc, they become refugees in other nations. But for some reason in this particular case, it's okay for the

When a populace is displaced by war, famine, genocide etc, they become refugees in other nations. But for some reason in this particular case, it's okay for them to in turn displace another people who are already established in Palestine (a completely different country from the ones they fled)? Just because they want a territory of their own? Should the Rwandan Tutsi be allowed to "fight for a home" in Egypt? Or maybe they should take Portugal?