FBI combed through NSA's trove of Americans' communications WITHOUT a warrant in its search for 'racially motivated violent extremists' when it was already warned the practice was unconstitutional A newly declassified report shows the FBI trawled through vast troves of Americans' communications collected by the National Security Agency Despite previous warnings it was violating the Constitution, the report reveals how the FBI continues to use warrantless searches for routine criminal cases A single request from an FBI analyst for NSA data 'in connection with predicated criminal investigations relating to domestic terrorism' turned up 33 hits It's unclear from the heavily-redacted FISA court report whether it uncovered any criminal extremist behavior or made any arrests resulting from the searches