Indonesian Muslims wave Hizbut Tahrir's flag 'ar rayah' during an anti-government rally in Jakarta on July 18, 2017, to condemn the issue of a decree allowing the country to ban groups that oppose its official state ideology, in a move seen to target radical Islamists in the world's most populous Muslim-majority country. / AFP PHOTO / BAY ISMOYO        (Photo credit should read BAY ISMOYO/AFP/Getty Images)