The largest of the protests Saturday may have been in Miami, where hundreds of people gathered at the Torch of Friendship monument on Biscayne Boulevard at 3 p.m. before marching down Third Street, away from Bayfront Park. By 5 p.m., the protesters had completed a looping route and returned to the monument, weaving through traffic on Biscayne Boulevard while chanting “Black Lives Matter” and “George Floyd,” the name of the black man killed by a white police officer in Minneapolis, whose death has touched off protests around the country.