ANN ARBOR, Mich. – On Friday, undergraduate students at the University of Michigan voiced support for graduate students and resident advisors on strike through a solidarity protest and march. More than 250 undergraduates and members of Students Demand Representation, a U-M student activist organization, listened to speeches given from the steps of the Michigan Union about labor unions and the safety of university workers. After the speeches, undergraduate students marched through downtown Ann Arbor and across campus to join those on strike and to support U-M Dining employees who staged a walkout last week. On Monday afternoon, University of Michigan president Mark Schlissel said through video that the university has taken legal action against the strike. According to University spokesman Rick Fitzgerald, the move includes a “temporary restraining order and preliminary injunction against the union strike.”More University of Michigan strike coverage: