On July 19, 1972, the government of Colonel Arturo Armando Molina intervened at the university to suppress the student uprising with military action.

[11] On July 6, 2005, there was a student movement against the government of President Elias Antonio Saca Gonzalez for the possibility of allowing an increase in fare of public transport.

[12] Almost exactly a year later, on July 5, 2006, a new student march was carried out against the government of Antonio Saca, but this time as a sign of dissatisfaction when knowing the approval of an increase to the rate of passage city bus, which culminated in the outside the central campus of the UES, where there was a shootout between some protesters and police.

This case were tried and convicted the protesters José Mario Belloso Castillo and Luis Antonio Herrador Funes, respectively, as author and accomplice of the homicide of both police officers.

[17] As a result of these events, the UES was closed for the next six days while the PNC raided their premises for evidence against those responsible for the death of the two riot police.

[18] By an attack armed police officers, the government of Antonio Saca directly blamed the FMLN of having planned these riots, due to the fact that the author of the shots and his accomplice were affiliated to this political party.