Rare demonstrations on economical grievances have erupted over the last few weeks
                                
                                
                                    (Newser) -
                                    Egyptian authorities have arrested hundreds of people in their effort to clamp down on a spate of small but exceptionally rare protests across the country, a global watchdog and human rights lawyers said Friday. Riot police forcibly dispersed the limited demonstrations over economic grievances that erupted across several impoverished, rural...