if you fly with the crows, you get shot with the crows

proverb If one spends time with bad people, one will eventually become like them or suffer a similarly bad fate. I worry about my brother hanging out with all those troublemakers—if you fly with the crows, you get shot with the crows, you know? I'm a firm believer that if you fly with the crows, you get shot with the crows, so I don't trust anyone who hangs out with that slimy politician. A: "Why has my reputation taken a hit? I wasn't involved in their crimes!" B: "It doesn't matter—if you fly with the crows, you get shot with the crows."