Talking isn't going to do anything, as we're seeing right now that violence gets people to notice. Sucks, but it's how the world works.
Also I'm not advocating Coulter to be murdered. She's a joke.
Violence will get people to notice and empathize against it, leading many further astray. Doesn't matter the subject, it's poor form and most will never and should never condone its use to win an argument. She doesn't deserve a soapbox and spreads foul beliefs, but rioting plays right into her hand and further builds her support.
It also can set a really dangerous precedent if the shoes were on the other foot.