Thousands of opposition protesters demonstrate against electoral reforms of the leftist ruling party involving the electoral system, at Zocalo square in Mexico City. Opposition groups are called for demonstrations in various cities in Mexico to reject a controversial electoral reform championed by President Andres Manuel Lopez Obrador that critics see as an attack on democracy ahead of key elections next year. The proposal aims to reduce the size and budget of the independent agency that organises elections, the National Electoral Institute (INE). IMAGES