There is no "new anti-Semitism." Anti-Semitism has not mutated to include anti-Zionism. Instead, accepting the unintelligible Zionist definition of Jewish identity has caused Zionists to be defined out of the protected classes of minorities that society has created laws to protect. The IHRA definition is a misguided and destructive attempt to rectify this.
For further reading:
The Empty Wagon: Zionism's Journey From Identity Crisis to Identity Theft
The UnJewish State: The Politics of Jewish Identity in Israel