Tentative signs are emerging that the leaders of a protest movement demanding that Prime Minister Yingluck Shinawatra step down from office are seeking a possible negotiated settlement to the current crisis. A march and rally Thursday, centered on a high-end shopping mall near the Asoke intersection, meanwhile drew fewer than 7,500 people, a far smaller gathering than earlier protests that saw as many as 200,000 people in the streets. But it also attracted enthusiastic crowds of office workers and others who waved Thai flags and blew whistles from overpasses and a mass rail station overlooking the protest.