Those who know (man with brick behind his back while car omes past)

A man is standing, concealed brick in his hand, hidden behind his back. He's waiting on the side of a city street, pebbled sidewalks beneath his feet. He's dressed in a dark-colored casual outfit, perhaps jeans and a hoodie. His expression is unreadable, tense perhaps, as he anticipates something. There's a car approaching from the distance. It's a sleek silver sedan, moving at a decent speed down the asphalt road. Tall buildings form the backdrop of this scene, their windows sparkling in the soft glow of twilight.