Legally, there's nothing they could do to make the mob leave.
Maybe not in Texas, but in Iowa they would have shut down that crap about the time it started. Unlawful assembly, checking ID's for curfew and drinking violations, search for contraband and weapons with cause. They wouldn't be around long around here.
We may know the time Ben Carson lied, but does anyone know the time Hillary Clinton told the truth?
Immersing oneself in progressive lieberalism is no different than bathing in the sewage of Hell.
