This party in power during the Tlatelolco Massacre at the 1968 Summer Olympics was founded by Plutarco Calles.
This party's rule was protested by over a quarter of a million people in the Silent March, which was followed by a leader of this party sending troops to take over the National Autonomous University and National Polytechnic Institute. Another leader of this party was criticized for refusing international aid following a devastating earthquake in 1985. This party further lost face following its obvious rigging of the 1988 presidential election, which was controversially won by a member chosen to run by the finger tap, or el dedazo. This party in power during the Tlatelolco Massacre at the 1968 Summer Olympics was founded by Plutarco Calles. For 10 points, name this political party that held power for over seventy years in Mexico before it was defeated by Vicente Fox of the PAN.
This party's rule was protested by over a quarter of a million people in the Silent March, which was followed by a leader of this party sending troops to take over the National Autonomous University and National Polytechnic Institute.
PRI [or Institutional Revolutionary Party; or Partido Revolucionario Institucional]