He said he broke up with his last girlfriend because she was beginning to 'crowd' him. [=she was not allowing him enough privacy and independence]
Her parents are concerned that she's been hanging out with 'a bad crowd'. [=with people who do illegal or immoral things]
He was never one to 'follow the crowd', so we weren't surprised when he dropped out of college to start his own business.
(..) - Hmph! - Father! Come on, boys, break it up. Break it up now. Hey, what the-- Whoa, quit, quit, quit shoving now. Quit, whoa. Don't crowd. Now take it easy. Take it easy there. Whoa-ho-ho there. Whoa! Steady there, Nellie. Go ahead, Pinoke, ask them. Could any ofyou tell me where to fi nd Monstro? (..)1940 Pinocchio