Boston Police are bracing for violence to break out at Saturday’s “free speech” rally and have taken precautionary measures to prevent it from devolving into a clash between extremists and demonstrators on both sides of the ideological spectrum. To enhance public safety, police have put up road blockades and gone so far as to ban food vendors from the historic Boston Common, where the demonstration is expected to take place, as they hope to prevent a repeat of the Charlottesville attack last weekend according to Reuters.