“How do they infiltrate?”
Remember the poster JohnGalt?
Remember the cult like following they developed?
They snookered quite a few people into following them right off the cliff.
That, my friend, is infiltration.
How did they do it?
They posted statements that were close to conservative, but not quite.
They hid their intents.
And when they thought they’d gathered enough people/were ‘popular enough’ to defend them from the Zot, they posted less and less conservative sounding material and began posting more and more obvious liberal talking points.
Some people are born followers, and have not the slightest idea what they believe. They’re known as “useful idiots.”