You mean something to the effect of: "Peaceful protests are part of our democracy. We invite people to share their opinions; that's what our country is all about. The key word in that is 'peaceful.' And if it's peaceful, us in law enforcement are going to make sure you have a safe environment to do it in." And then if he went on to say: "If you resist lawful orders, you're going to jail... if you block an intersection or a roadway, in Brevard County, you are going to jail. If you flee arrest, you're going go to jail tired, because we are gonna run you down and put you in jail. If you try to mob rule a car in Brevard County, gathering around it refusing to let the driver leave, in our county you're most likely gonna get run over and dragged across the street. If you spit on us, you're going to the hospital, then jail. If you hit one of us, you're going to the hospital and jail, and most likely get bitten by one of our big beautiful dogs that we have here. If you throw a brick, a firebomb, or point a gun at one of our deputies, we will be notifying your families where to colect your remains... to make it real simple, if you don't want any of those things to happen to you, obey the law. Go protest all you want. Do it peacefully. Stand on the mountaintops and yell your opinion, your views, we invite that." Would that have worked for you? It's an invitation and encouragement to express opinions and an assurance that peaceful protests will not meet with harm, and also an asurance that increasingly violent acts will be met with an increasingly violent response, none of them out of line with standards of reasonableness.
Nothing at all, because that's EXACTLY what he did.