Robert Ovetz, a history and politics professor at the College of Marin and a Woodacre resident, won a $48,500 settlement from the City of Oakland this week after filing a federal lawsuit alleging that police threw him to the ground and beat him during an Occupy protest in 2012. According to the lawsuit, Dr. Ovetz attended the Occupy Oakland protest on Jan. 28 as an observer to research for a book about why American protest…