Event was similar to those happening in more than 30 cities across the country in a national "Day of Action" commemorating two months since the start of the "Occupy Wall Street" movement.
In a throwback to the Great Depression, Occupy Chicago plans to form a nine-block-long bread line in the Loop on Friday.
Demonstrators will march single file down LaSalle Street at noon from their headquarters at Jackson Street to the James Thompson Center, which houses Illinois State Offices and Governor Quinn, to protest a state bill which gives tax breaks to the Chicago Mercantile Exchange (CME) and the Chicago Board Options Exchange (CBOE).
Protesters are encouraged to dress the part, with ratty old suits and tin cups, according to a statement by Occupy Chicago.
An Occupy Chicago spokeswoman said the bill was only being considered because the exchanges are major contributors to the political campaigns of Rahm Emanuel, Pat Quinn and Mike Madigan.
The protest comes a day after several hundred people marched through the loop as part of a national "Day of Action" commemorating two months since the start of the "Occupy Wall Street" movement.
Thursday evening, Chicago police closed a portion of Michigan Avenue, between Jackson and Van Buren Street, so the demonstrators could pass through.