it was a Canadian tribunal ... [that] fully acquitted them

Forgive me for not completely trusting the judgement of a country that was explicitly importing Nazis to help crush its domestic labour movement

And when I say explicit, I mean it:

One way of getting into postwar Canada "was by showing the SS tattoo," Canadian historian Irving Abella told "60 Minutes" interviewer Mike Wallace. "This proved that you were an anti-Communist."