OAKLAND -- Nonviolent demonstrators were roughed up by police during last week's protest in downtown Oakland over the involuntary-manslaughter conviction of a former BART police officer in the fatal shooting of an unarmed rider, civil rights attorneys said Wednesday. Some of those who clashed with law-enforcement officers were among the 78 people arrested July 8 during a protest in which downtown businesses were looted, had their windows broken or were damaged by anti-police graffiti, authorities said. But Carlos Villarreal, executive director of the San Francisco Bay Area chapter of the National Lawyers Guild, said officers had attacked people who did...