Japan is trying to protect it: comprehensive surveillance of mosques and Islamic-related organisations in Japan includes profiling, cameras, undercover agents, informants, and the collection of personal data. It began shortly after the September 11 terrorist attacks in 2001, became public through a leak in 2010, and the Supreme Court declared it legal in 2016 (stating it was "necessary and unavoidable" for counter-terrorism).
Japan is nice because it is Japanese. And now I'm probably going to loose my hard-earned 46 karma points here on HN. ;-) worth it.