YANGON, Myanmar (AP) — Police are cracking down on demonstrators opposing Myanmar’s military coup, firing warning shots and shooting water cannons to disperse crowds that have taken to the streets in defiance of rules making protests illegal. The U.N office in Myanmar expressed concern about the use of force by the security forces. Water cannons were used in Mandalay, where gunshots were heard. They also were used in the capital, Natpyitaw, for a second day, and a Myanmar news report said a young women protester there was shot. The protesters are demanding that power be restored to the deposed civilian government and are seeking freedom for the nation’s elected leader, Aung San Suu Kyi, and other governing party members.