sentences:  With their trial set for May 30, various student organisations convened in the days before and decided to hold mass demonstrations across the International Settlement and outside the Mixed Court.On the morning of May 30, 1925, just after the trial of the arrested students began, Shanghai Municipal Police arrested 15 ringleaders of a student protest being held on and around Nanking Road, in the foreign-controlled International Settlement.The protesters were held in Louza (Laozha) police station, which by 2