VIRGINIA BEACH, Va. — In his first public event since last week’s deadly ambush of Dallas police officers, Donald Trump on Monday called for an end to hostility to the nation’s law enforcement and insisted that he is the “law and order” candidate .. Speaking to an invited audience in what is expected to be battleground state this fall, .. the presumptive Republican presidential nominee, .. kicked off his remarks with a lengthy statement of support for the country’s law enforcement officers amid turmoil prompted by a spate of deadly police shootings. Trump called last Thursday’s ambush in Dallas, .....