Social tensions exploded outside Mexico City’s Estadio Azteca soccer stadium on Thursday, as violent clashes between demonstrators and police marred the opening of the World Cup. The unrest follows weeks of demonstrations that have already jeopardized plans to host World Cup fan events in the Zócalo, the city’s central square. While teachers have spearheaded the push for improved working conditions for weeks, other critics who have joined in more recently directly accuse the government of prioritizing international visitors over the immediate needs of local citizens.