Literally (in 1918):
Here is Zinoviev addressing a gathering of Communists two weeks after the launching of the Red Terror: “We must carry along with us 90 million out of the 100 million of Soviet Russia’s inhabitants. As for the rest, we have nothing to say to them. They must be annihilated.” These words, by one of the highest Soviet officials, was a sentence of death on 10 million human beings.
And here is the organ of the Red Army inciting the populace to pogroms:
Without mercy, without sparing, we will kill our enemies by the scores of hundreds, let them be thousands, let them drown themselves in their own blood. For the blood of Lenin and Uritskii… let there be floods of blood of the bourgeoisie – more blood, as much as possible.
(Richard Pipes, The Russian Revolution 1899-1919, Fontana, 1990, p. 820.)
This was not how things operated under Stalin, or Hitler:
The Stalinist and Nazi holocausts were carried out with much greater decorum. Stalin’s “kulaks” and political undesirables, sentenced to die from hunger and exhaustion, would be sent to “correction camps”, while Hitler’s Jews, en route to gas chambers, would be “evacuated” or “relocated”. The early Bolshevik terror, by contrast, was carried out in the open. Here there was no flinching, no resort to euphemisms, for this nationwide Grand Guignol was meant to serve educational purposes by having everyone — rulers as well as ruled — bear responsibility and hence develop an equal interest in the regime’s survival. (Pipes, 820)
It was probably also due to the Leninists’ belief that the worldwide Communist revolution was nigh, so they didn’t have to worry that much about how they were coming across to the rest of the world. In fact
the Communist press published a running account from the provinces on the progress of the Red Terror, column after column of reports of executions … [The Cheka Weekly] regularly carried summaries of executions, neatly arranged by provinces, as if they were the results of regional football matches. (Pipes, 820)