Steven Timothy Snyder was part of a group of skinheads who attacked black and Hispanic people nearly 20 years ago , court records show . Snyder was convicted in 1996 of disorderly conduct in Font du Lac , the same city where he killed Trooper Trevor Casper on Tuesday . The case has been reopened after new evidence emerged that could help explain why Snyder targeted blacks and Hispanics as well as white motorists during his rampage through Wisconsin's capital.
Steven Timothy Snyder was part of a group of skinheads who attacked black and Hispanic people nearly 20 years ago , court records show . Snyder was convicted in 1996 of disorderly conduct in Font du Lac , the same city where he killed Trooper Trevor Casper on Tuesday . Documents say he had several 'White Power ' tattoos and was carrying several dozen printed cards in his coat promoting the National Alliance . According to the Wisconsin Department of Justice , Snyder robbed a bank in the Village of Wausaukee that day . Casper was on his first solo patrol when he followed a vehicle in Fond du Lac that matched the description of the one used in the robbery . The trooper ultimately got into a shootout with Snyder and both were fatally wounded , according to Department of Justice officials .