When you have a bunch of people with a diametrically opposed view show up to protest at a gathering like this, you don't think violence (on either side) is a potential?  Or do you think it's a good idea for members of rival biker gangs to get together at the same bar because that's a perfect analogy for this.  And furthermore, you do recall the left protesting all on their own during the various protests earlier this year and all of the damage and violence that ensued?  And that was just due to them, not any counter protesters.  Remember Berkeley?  So, where were you on that violence?