This time? https://www.politico.com/story/2014/09/joe-biden-shylocks-reaction-111053

Pretty obviously him being racist

Biden used the term when he spoke at the 40th anniversary celebration for the Legal Services Corporation and referred to his son, Delaware Attorney General Beau Biden, and his experience while in Iraq.

“People would come up to him and talk about what was happening to them at home in terms of foreclosures, in terms of bad loans that were being — I mean, these Shylocks who took advantage of these women and men while overseas,” Biden said.