The June 1990 Mineriad was the suppression of sit-in protests in Bucharest by groups of industrial workers and coal miners, specifically brought to the capital from the Jiu Valley for this purpose.
The protests were directed against the National Salvation Front, which had won both the parliamentary and the presidential elections on the 20 May. The Front's victory was seen by some as a hidden attempt on the communists' part to hold onto power (since most of the Front's members had previously belonged to the Communist Party).
According to official data, the June 1990 Mineriad resulted in 6 deaths and about 1,000 people injured. Today, the Mineriad is one of the most controversial episodes in recent history, since it is still unclear who were the people responsible for the violence.