Lawyers representing traders who allege they were ripped off by a group of colluding global banks filed eye-popping evidence in a Manhattan Federal Court yesterday showing that even as global banks were being criminally probed for rigging currency markets, they continued to engage in rigging the silver market, with a UBS trader referring to the group as the “mafia.”

Numerous trader conversations confirming the sharing of insider information among traders at global banks were provided to the court yesterday, including the following between traders at Barclays and Deutsche Bank on April 6, 2011 — where one trader suggests the collusion amounts to “one team one dream.”