I didn't say that there isn't any violence, I meant as a group they are not going to use that, at least yet. They are not going to go nuts and riot for example. There are more assaults at pro football games than has been at these several hundred thousand people rallies. For instance in Dallas a couple weeks ago "Police estimated the crowd at 350,000 to 500,000. There were no reports of violence." That isn't normal for such a large group and an issue that is emotional to so many.
That isn't to say there won't be violence on a larger scale than a single assault at some point, there are some on the illegals side that are chafing for a fight as well as many of those who make the opposition to them.