Dozens of hooded anarchists threw petrol bombs and stones at riot police, who responded with tear gas and stun grenades. The left-led government is trying to overhaul the country's ailing pension system by increasing social security contributions to avoid pension cuts, but critics say the reforms will lead many to lose two-thirds of their income. Athens pensioner Yannis Kouvalakis said Tsipras' government "fooled" Greeks by promising to reverse austerity cuts. Because they are from the left, what happened?