Question: The failed Escobar Rebellion of 1929 challenged the political power of what political leader, who had been the interior minister under Mexican President Alvaro Obregon?  
Context: El Parque de la Bombilla is a public park located in the neighborhood of San Angel, Alvaro Obregon district, south of Mexico City.  The park and the monument are on memory of Alvaro Obregon.  It opened on July 17, 1935. The Escobar Rebellion was a conflict in northern Mexico in 1929 during the Maximato, between the government forces of President Emilio Portes Gil and rebel forces under the command of General José Gonzalo Escobar.  After some initial success in taking over several key cities in the northern half of the country, the Escobar rebels were decisively defeated in a major battle at Jiménez, Chihuahua, and were eventually swept aside by the advancing government forces under the command of General Calles. The Bombing of Naco was an international incident which occurred in the border town of Naco, Arizona, during the 1929 Escobar Rebellion.  While rebel forces were battling Mexican 'Federales' for control of the neighboring town of Naco, Sonora, the Irish mercenary and pilot Patrick Murphy was hired to bombard the government forces with improvised explosives dropped from his biplane.  During the ensuing fighting, Murphy mistakenly dropped bombs on the American side of the international border on three occasions, causing significant damage to both private and government-owned property, as well slight injuries to several American spectators watching the battle from across the border.  The bombing, although unintentional, is noted for being the first aerial bombardment of the contiguous United States by a foreign power in history. María del Rosario Guerra de La Espriella is a Colombian economist, professor and politician who has served as Senator of Colombia since 2014.  Maria Del Rosario was elected under the newly created political party, the Democratic Center which is led by former Colombian President Alvaro Uribe.  Maria Del Rosario previously served as Minister of Communications under President Alvaro Uribe, from July 2006 until January 2010.  In March 2017, Maria Del Rosario announced her candidacy for President of Colombia. Plutarco Elías Calles (] ; September 25, 1877 – October 19, 1945) was a Mexican general and politician.  He was the powerful interior minister under President Álvaro Obregón, who chose Calles as his successor.  The 1924 Calles presidential campaign was the first populist presidential campaign in the nation's history, as he called for land redistribution and promised equal justice, more education, additional labor rights, and democratic governance.  Calles indeed tried to fulfill his promises during his populist phase (1924–26), but entered an anti-clerical phase (1926–28). The Battle of Naco, or the First Battle of Naco due to a later siege was a battle of the Mexican Revolution between Constitutionalist forces and Mexican government forces.  Rebel forces under General Alvaro Obregon defeated the Mexican Army garrison and captured Naco, Sonora. Al-Aref al-Khoga is a Libyan political leader who is the current Minister of Interior of Libya in the Government of National Accord.  He is an Islamist and held the post of interior minister in the Tripoli-based government, the General National Congress.  Al-Khoga has a police background. General Don José Gonzalo Escobar (1892-1969) was an officer in the Mexican Army and leader of the failed Escobar Rebellion in 1929, which challenged the political power of Plutarco Elías Calles . Abdolreza Rahmani Fazli is the current Interior Minister.  His term will be up August 2015, Elections for a new interior minister can be voted in by the majority of people or chosen by the head of Parliament.  Due to the recent changes in the political spectrum and the way in which officials acquire political status Iran has become much more inclusive of the majority of people and allowing them to cast a vote.  This means that even if the selection of the new Interior minister is a closed door private selection the majority of the people can still choose to vote that person out in which a special election would be held. The Siege of Naco was a major battle fought in the border town of Naco, Sonora, Mexico, between March 31 and April 6, 1929, during the Escobar Rebellion.  Following their capture of Cananea in 1928 and the drafting of the "Plan of Hermosillo", rebel forces under the command of General José Gonzalo Escobar occupied Agua Prieta and from there moved to take control of Naco, which at the time was a small, dusty village opposite of Naco, Arizona, occupied by government forces loyal to President Emilio Portes Gil.  The rebels hoped to fund the revolution using the revenue generated by Naco and Agua Prieta, where there was a significant amount of public support for their cause.
Answer: Plutarco Elías Calles