The following webpage contains observations about Jews that are as old as Louis Pasteur. "The Jew is a pathogen who is infecting the white race."
Is there a parallel between the designations "potentially infectious" and "potentially violent?" One wonders. In the nineteenth and twentieth centuries anti-Semitism moved away from a religion-based prejudice and became "scientific." Jews came to be viewed as "genetically inferior" and incapable of redemption through religious conversion. The Jews had to be eliminated.
Compare the following: We spoke with a physician who warned about the possibility of violence. He was "unredeemable" and had to be eliminated. He posed a danger to others.
(Note that I make these observations without mentioning any names!)