Biden campaign co-chair Mitch Landrieu tells CNN’s Jake Tapper that Biden “understands that people have a right to protest, but they have to do so peacefully,” adding “the president has been very clear about this.”Biden campaign co-chair Mitch Landrieu tells CNN’s Jake Tapper that Biden “understands that people have a right to protest, but they have to do so peacefully,” adding “the president has been very clear about this.”