The Pew Research Center recently published a study of religious persecution over the period 2007-12 and the results aren't pretty. Of 198 countries and territories included in the study, 29 per cent had high or very high government restrictions on religion and 33 per cent had high or very high social hostilities involving religion. Egypt had the highest level of government restrictions and Pakistan the highest level of social hostilities. Over the period, religious hostilities increased in every major region of the world except the Americas.
Women were harassed over religious dress in a third of the countries, and religion-related mob violence occurred in a quarter. About a fifth of the countries suffered religion-related terrorism and sectarian violence.
In 2012, the top five countries for very high social hostilities involving religion were Pakistan, India, Somalia, Israel and Iraq. The top five for very high government restrictions on religion were Egypt, China, Iran, Saudi Arabia and Indonesia. Also in 2012, the Middle East and North Africa saw both the highest levels of social hostilities and of government restrictions.
Government restrictions and social hostilities didn't necessarily coincide. For example, Jews faced social harassment
in many more countries than they faced government harassment, whereas Sikhs faced government harassment in more countries than they faced hostility by groups or individuals.
That discrimination and hostility are occurring because of religion, either by or to members of various faiths, isn't surprising—bigotry and violence have always followed religion around. The extent surprises me, however, as does the fact that, in recent years at least, it is increasing.