COMPTON — The dignitaries poured in, the mariachi band played and a few hundred community members surrounded the Martin Luther King, Jr. memorial outside City Hall Tuesday afternoon to witness the oath of office ceremony swearing in six elected city officials – two of them new, young faces. “Hola. Buenos dias,” said 26-year-old Isaac Galvan, the first Latino City Council member in Compton’s history and first to be sworn in. “I’m grateful that the voters…