CHICAGO — More than 2,000 pro-Palestinian protesters marched Wednesday past a park where pro-Israel demonstrators had gathered earlier and toward the arena hosting the third night of the Democratic National Convention. The demonstration, which stayed largely peaceful, came a day after violent clashes between police and protesters led to 56 arrests at a much smaller unsanctioned protest outside the Israeli Consulate. Organizers of Wednesday’s demonstration drew on the Chicago area’s Palestinian community, one of the largest in the country, by bringing buses from suburban mosques. Raed Shuk, 48, came with his children from the suburbs, including his 2-year-old son, who satmore