I try not to reveal I feel anxiety just because a black man has walked up behind me in a gas station in a bad neighborhood and he does not have a car. (Para. 10)

Meaning: I try not to show that I feel worried just because a black man has walked up behind me in a gas station in a bad neighborhood and because he does not have a car.

"A bad neighborhood" here means a neighborhood with a bad name because of

the frequent happening of crime or violence.

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