Historically, people in Bohemia in today's Czech Republic (Czechia) were one of the very first Protestants in Europe. As a result of the Thirty Years' War following the Bohemian Revolt, many Czechs were either killed, executed (see for Old Town Square execution), forcibly turned into Roman Catholics, or emigrated to Scandinavia and the Low Countries. In the aftermath of the Thirty Years' War, the number of inhabitants in the Kingdom of Bohemia decreased from three million to only 800,000 due to multiple factors, including devastating ongoing battles such as the significant Battle of White Mountain and the Battle of Prague (1648). However, in recent years, most Czechs report as overwhelmingly non-religious, with some describing themselves as Catholic (10.3%).