With the nation teetering on the brink of default amid major inflation pressures at home and growing poverty (and Kirchner facing pressure into next year's election), today's loss in the FIFA World Cup final appears to have lit the blue touch paper. As RT reports, police used tear gas and water cannons to disperse angry fans in Buenos Aires. Following the mass gathering around the Obelisk during the game, fans clashed with riot police as the loss sunk in. There are no reports of civilian injuries but 8 police were hurt. Rio has also seen violence between Argentina fans and others (and Brazil's Rousseff has issued a calming statement).

As AP reports,

Riot police are firing tear gas and using water cannons to restrain a group of youth who are hurling rocks and vandalizing stores at a rally in Buenos Aires to celebrate Argentina's gutsy performance in a 1-0 loss to Germany in the World Cup finals. Parents with young children could be seen running down streets after police, who at first remained on the sidelines, tried to take back the area near the city's iconic Obelisk after 9 p.m. local time. Local media reported 8 police officers were injured in violence late Sunday. The disturbances came after thousands of Argentines gathered peacefully at the Obelisk with families and neighbors to applaud Argentina's best World Cup performance in 24 years.

The Obelisk where fans watched the game...

"que pasó argentina, se les fue el internet?" no es que estábamos festejando en el obelisco visteSSSSS pic.twitter.com/xDnPYcpJtv — fuck you vos (@acrossthey) July 14, 2014

Has become a riot zone...

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And even in Rio there were problems after the match...

Perhaps fearing the same in Brazil, President Rousseff issued a 'calming' statement: