ANYTHING is acceptable if it advances Socialism
Since socialism is supposed to create an earthy utopia as its ends, the means that its believers are willing to sanction are limitless. Imagine if your religion didn't limit the means that you used to spread it (or look to times in history that such limits were de-emphasized), indeed imagine if failing to use any means to advance it was itself a sin. That is arguable the mindset of a socialist.
If they can advance better by propaganda and deceit they will, but don't be fooled to think that they will not resort to naked force if that is perceived as suddenly more advantageous. There is no hypocrisy, lie, temporary alliance, or small ratcheting step that is in the end justifiable to the socialist as long as it serves their ends.
Anyone who'd like to work with or from this idea with or without attribution is free to.