the young teacher's 'self-identification' [='identification'] with his students
He needed to show (his) 'identification' before they would cash the check.
They had/felt a (strong) sense of 'identification with' their neighbors.
(..) so they take time. I don't have time. I need the money immediately. We might be able to... Do you have, uh, identification? Yeah. Thank you. Okay. Thank you. Now, you'll need to write a check, (..)2018 Fifty Shades Freed