"Anarchy never sleeps, son. They're meeting right down the El line a couple-three stops, and you might want to take a look in. Even get educated, maybe."
* * * * * * * * * *
"Anarchy"
We all remember this is just the capitalist synonym for "unionizing."
"the El line"
Being from the West Coast, there was an awful lot of aging before I learned Chicago's "El" train was an elevated train and not the "L" train. I also didn't know much about Judaism!
"might want to take a look in. Even get educated"
So Nate wants Lew to infiltrate a Union meeting (possibly where they might be planning some anarchy! You've got to get the capitalists' attention somehow!). The "even get educated" bit seems like some good foreshadowing. Nate wants Lew to learn how terrible these anarchists are. But Lew will probably become "educated" on exactly what's going on and how little "anarchy" is actually taking place. These people are blowing up cops with meaning and purpose! It isn't just a bunch of nihilistic fun!