There are no religious groups free of harassment somewhere in the contemporary world. Klaus Wetzel, an expert on religious persecution for the German Bundestag, the House of Lords, the US House of Representatives, the European Parliament, and the International Institute for Religious Freedom, explains that "In around a quarter of all countries in the world, the restrictions imposed by governments, or hostilities towards one or more religious groups, are "high" or "very high". Some of the most populous countries in the world belong to this group, such as China, India, Indonesia and Pakistan. Therefore, around three quarters of the world's population live in them."