BOSTON — They walked out shortly after lunch, leaving their desks and marching down from the seventh floor of the downtown Boston headquarters where they work.

The Wayfair workers then spilled onto famous Copley Square where hundreds of employees and supporters protested the online furniture retail giant’s sales to migrant detention centers.

Their early afternoon demonstration Wednesday came in response to Wayfair CEO Niraj Shah rejecting a request by 571 employees who signed a petition asking the company to desist from doing business with contractors of border detention camps on the U.S.-Mexico border.