SAN CRISTOBAL, VENEZUELA - MARCH 07:  A protester holds a homemade mortar tube during an anti-govenment protest on March 7, 2014 in San Cristobal, Venezuela. Protesters have set up barricades throughout San Cristobal, the capital of Venezuela's Tachira state, bordering Colombia. The state has been a focal point for anti-government protests for almost a month.  (Photo by John Moore/Getty Images)