CHICAGO (CBS) — About 200 people, many of them Occupy Chicago protesters, gathered at Federal Plaza on Tuesday to send a message on this Tax Day 2012.

“I just turned in my taxes today. But there are a lot of people that don’t have to pay the same taxes the rest of us do. That ain’t right,” said activist Tom Hopkins.

Four groups then split up and marched to Chicago corporations like Exelon, Verizon, BMO Harris and Bank of America.

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Activists marked the tax filing deadline by delivering tax “bills” and a message to what they call tax dodging corporations and executives.

“Some people we saw just walked into the post office and pay their taxes and now they are going to say corporations did you pay your taxes like we did?” said Shelly Ruzicka of Rise Chicago.

Marchers are also urging lawmakers to pass the Buffet Rule that requires millionaires to pay more taxes.

The rally culminated at the Chicago Mercantile Exchange.