Thanks for attributing it. I was wondering if I had heard/read those lines before.

If anyone is interested, it’s part of a longer poem Communism is the Middle Term. Here it is in full:

To call for the overthrow of the existing order
May seem a terrible thing
But what exists is no order.
To seek refuge in violence
May seem evil.
But what is constantly at work is violence
And there is nothing special about it.
Communism is not the extreme outlier
That only in a small part can be realized,
and until it is not completely realized,
The situation is unbearable
Even for someone who is insensitive.
Communism is really the most minimal demand
What is nearest, reasonable, the middle term.
Whoever is opposed to it is not someone who thinks otherwise
It is someone who does not think or who thinks only about himself
It is an enemy of the human species who,
Terrible
Evil
Insensitive
And, in particular,
Wanting the most extreme, realised even in the tiniest part,
Plunges all humankind into destruction.