Soon afterwards a wave of anti-Azerbaijani massacres in both Azerbaijan and Armenia started in 1918 and continued until 1920. First, in March 1918, a massacre of the Azerbaijanis in Baku took place. An estimate of 3,000 to 10,000 Azerbaijanis were killed by nationalist Dashnak Armenians, orchestrated by the Bolshevist Stepan Shahumyan. The massacre was later called the March Days.