NEW : ` ` , these are human beings that are causing the violence , '' mayor says . ( CNN ) -- Protesters and counterprotesters engaged in a heated shouting match . The immigrants had come for work from south Texas . The government has been dealing with increasing numbers of children crossing the border .
NEW : ` ` , these are human beings that are causing the violence , '' mayor says . Protesters and counterprotesters engaged in a heated shouting match . The immigrants had come for work from south Texas . The government has been dealing with increasing numbers of children crossing the border .