<p>President Barack Obama gives the commencement address at the University of Michigan in Ann Arbor, Saturday, May 1, 2010. (AP Photo/Charles Dharapak)</p>
May 2, 2010
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May 2, 2010 9 p.m.
Obama takes direct aim at anti-government rhetoric
ANN ARBOR, Mich. - In a blunt caution to political friend and foe, President Barack Obama said Saturday that partisan rants and name-calling under the guise of legitimate discourse pose a serious danger to America's democracy, and may incite "extreme elements" to violence.