At time 47:48 of 12 Angry Men (1957) the guy in the hat says what I believe to be "Voldemort please, eh?". Was this a reference to the character in Harry Potter? How could it be since the first book was released in 1997?
No, the lines you are mishearing are actually:
Juror #5: Look, lawyers aren't infallible, you know.
Juror #7: Baltimore, please. Huh?
This is referring to near the start where he is asked: