Nearly 70 percent of Hiroshima citizens who have attended or seen on TV annual ceremonies to mark the wartime U.S. atomic bombing of the city said shouts by demonstrators from just outside the venue should be restricted by an ordinance, a survey showed Monday.

About 60 percent of the 1,090 local residents who have attended or watched the events to commemorate the 1945 bombing on Aug. 6 over the past five years said they thought demonstrators' shouts using loudspeakers were "noisy," according to the survey conducted by the Hiroshima Municipal Government on 3,000 citizens.

Since early in the morning on the anniversary day, many anti-war civic groups yell slogans such as those calling for the abolition of nuclear weapons and criticizing Prime Minister Shinzo Abe for being negative toward nuclear disarmament.