SACRAMENTO, Calif. — A 21-year-old Sacramento man allegedly opened fire on passengers of a Greyhound bus Wednesday evening in Northern California, killing a woman and injuring four other people, two of whom remain hospitalized in critical condition. The incident, which Butte County District Attorney Michael Ramsey called a mass shooting, ended with law enforcement officers taking suspected shooter Asaahdi Elijah Coleman into custody at a nearby Walmart in Oroville, where he had gotten into a fight and then stripped naked, authorities said. Police and sheriff’s deputies responded around 7:30 p….