Tensions were high on Wednesday night near the Greek parliament building on Athens' Syntagma Square, which was the center of violent anti-austerity protests in years past.And while the streets of Athens were largely calm for much of the day, despite thousands marching against austerity measures tied to the country's new bailout agreement, the night took a more violent turn.As night fell, clashes broke out between protesters waiting to hear the fate of their country's economic future and the police sent to keep them calm