Fired up Cory Booker rallies 'foot soldiers' at Michigan Democratic convention Cory Booker gave a fiery sermon-style speech, urging Democrats to be "foot soldiers" for democracy as "darkness" spreads. NEW You can now listen to Fox News articles! Sen. Cory Booker, D-N.J., delivered a high-energy, revival sermon-style speech at the Michigan Democratic Convention , shouting and gesturing as he urged Democrats to become "foot soldiers for democracy" and warned that "darkness and wind" are sweeping