“Who are you, anyhow?” broke out Tom. “You’re one of that bunch that hangs around with Meyer Wolfshiem—that much I happen to know. I’ve made a little investigation into your affairs—and I’ll carry it further to-morrow.”
We met Wolfshiem earlier in the book, and since he is a gambler associated with crime no one wants to be associated with him publicly. Since Gatsby is actually connected to Wolfshiem, Tom is able to make him look bad by association.
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