In 1990, twenty years after the shootings, a memorial commemorating the events of May 4 was dedicated on the campus on a 2.5-acre (1.0 ha) site overlooking the University's Commons where the student protest took place. Even the construction of the monument became controversial and, in the end, only 7% of the design was constructed. The memorial does not contain the names of those killed or wounded in the shooting; under pressure, the university agreed to install a plaque near it with the names.