Newt Gingrich's statement about the Palestinians being an invented people is, at the very least, unhelpful. There is no denying that the Palestinians exist now, and it doesn't really matter if they became a national group in 1948 or centuries earlier.
Palestinians are right to be angry at Gingrich. However, they need to take a moment to think about their own hypocrisy. They regularly deny the existence of the Jewish people, claiming that Jews are merely a religious group, not a national one. Even the most moderate Palestinians hold this view, and it is one of the greatest obstacles to peace in the Middle East.
Neither Palestinian or Jewish peoplehood should be denied.