Bevel suggested recruiting students in the campaign. King was initially reluctant, but agreed. Bevel spent weeks developing strategy, recruiting and educating students in the philosophy and techniques of nonviolence. Birmingham's 16th Street Baptist Church was a center of the organizing. Bevel directed the students, 50 at a time, to walk to the City Hall to talk to Mayor Art Hanes about segregation in the city. Almost 1,000 students were arrested on the first day. When more arrived to march the following day, Eugene "Bull" Connor, City Commissioner of Public Safety, ordered that German Shepherd dogs and high-pressure fire hoses be used to stop the children from marching. The national and international media were covering the story, and photographs of the force used against schoolchildren generated public outrage against the city and its officials.