The reason for the protests has been cited as economic policies and a perceived failure to tackle corruption.
Consequently, PM Rossen Zhelyazkov has tended in his government's resignation. The PM has survived previous motions of no confidence - the government he runs has served less than a year in office.
Bulgaria's first budget in Euros has been withdrawn.
Bulgaria's current currency is the Lev (1 USD = 1.66 Lev). Eurobarometer has said 49% of Bulgarians are against the Euro.