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 that day 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 1996 . 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 .
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 .