Things may well have been different decades ago, but today there are definitely far more rabid anti-Semites on the left than on the right.
In case this is a reference to the Nazis, please remember that they were Left wing, as in "National Socialists".
Communists and Fascists are as different as chalk and chalk.
Communists seek to own the means of production, Fascists seek to control the means of production. Everything else is just a difference in letterheads.