M1: Chicago police bracing for 300,000-strong march
anticipate, balbo drives, cecelia comito, charles williams, chicago, chicago transit authority, children, columbus drive, cut, desplaines street, expected, federal plaza, grant park, he said, jackson boulevard, lake shore, march, michigan avenue, monday, officials, on monday, park, patrick waldron, police, randolph street, rather than, said he, stations, train stations, union park, virginia groark, williams, williams said