How is the issue of racism these days in the Army, specifically at Ft. Knox and towards Jews?

Never ran into it in my period of service and I worked at Ft. Knox in the mid-1990's and I never picked up on it as an issue then either. Are you sure your reading this right?

Can't speak about Ft. Knox specifically. In general, always has been, always will be. But, always remember, it's not so much a cultural attitude anymore. In fact, when I was in Vietnam, the 1967 war in Israel was ramping up and almost everyone I spoke to was ready to ship out and go fight for Israel. They were tired of fighting for people who wouldn't fight for themselves (not necessarily a truth but it's how many felt) They saw the Israelis as underdogs. Still, there were and are individuals with prejudicial attitudes towards Jews (and other groups). It's just something you learn to deal with. Just don't let the bastards get you down. They're not worth it...

Had two members of the Jewish faith that I served with, never had an issue with them, really great guys.