Anti-Semitism Is Too Over The Top Here
The problem with this movie is that Robert Ryan is too overtly consumed with hatred of Jews.
A real anti-semite could watch Ryan's frightening performance and say "well I'm not like that, and I don't know anyone who is. I've got nothing against jews; I've got jewish friends. I just wish they'd become Americans."
I'm not saying there weren't people like Ryan, but his out of control rage would've been more understandable if his victim had been gay rather than jewish. Having met anti-semites and homophobes, the anti-semites are very subtle and sly. The homophobes verge into disgust and fear.