Where I live has always been a "home -from-home" to many Polish people ; an early girlfriend,whilst I was still at school,was Sue Burzinksi, my second,after school, was Carol Ziolkowski ! Later,having joined the Navy, I rather fancied a Glaswegian blonde called Bozena Radomski ! But I never detected any feelings of anti-semitism in any of them ; in fact,I had never even considered,even remotely,that ,given their shared sufferings under the Nazi occupation,there could possibly be any animosity between Poles and Jews. Still, one lives and learns, I suppose.Sad world,isn't it ??
          As for the people who stole the sign.....Lock 'em up in one of the surviving buildings at Auschwitz (preferably an oven) for 6 months,with no contact with the outside world-----that ought to do the trick. I guess that they might need some counselling afterwards !