Actually, the reason this rioting is happening is due to the general loss of law and order in this country, most obviously in the last 7 years with a President who does not uphold the laws that Congress has passed....that is what the Executive branch of the government is supposed to do....it's Obama's job!  His Justice Department has refused to uphold the immigration laws for the past 7 years.  Creating Sanctuary Cities is one of the great mistakes in all US history.  They have promoted and allowed these thugs,  mostly illegal aliens to infiltrate and inhabit hundreds of cities across or great country.  This is not a "Trump problem" however Trump may be the solution to this terrible state of immigration affairs.