Songs were important during the revolution and civil war for conveying political messages.
Demean Bedny was one of the most popular poets during the revolution and would later become a favorite of Stalin's (though Stalin gave him a tongue lashing in 1930 for one of his poems). The poem "Send Off: A Red Army Song" was written in 1918 and depicts a young soldier deciding to go off to war and fight for the Bolsheviks.
The poem was put to music in 1922. You can hear a version here:
The song--as you can perhaps tell from the music--was perky and decidedly PG, whereas the original poem was more like PG-13. The young soldier gets frustrated with his squeamish family who is trying to get him to stay and get married and finally tells them:
I am marching off now with
The Red Army,
Our deadly battle will be with
We will give a talking to
Priests and kulaks:
Our bayonets'll pierce the guts of
(See the von Geldern and Stites collection below for the whole poem.)
Check out this collection of some anti-bolshevik songs of the era.