Police declared all of downtown Los Angeles to be an unlawful assembly area and ordered protesters to go home on Sunday night after a third day of demonstrations against President Donald Trump’s immigration policy that sometimes included burning cars and hurling bottles at officers. National Guard troops, deployed by Trump over the weekend to help quell the protests in a move that California Governor Gavin Newsom called unlawful, guarded federal government buildings on Sunday. The unrest in Los Angeles has become a flashpoint in Trump’s signature effort to clamp down on illegal immigration. The Republican president has pledged to deport record numbers of people who are in the country illegally and to lock down the US-Mexico border, setting the Immigration and Customs Enforcement (ICE) border agency a daily goal of arresting at least 3,000 migrants. California state and local officials, mainly Democrats, accuse Trump of inflaming initially small-scale protests by mounting a federal response. He calls the prote...