No, Warren. That's not true. Most of them are by mainstream media outlets and Jewish human rights organizations. I don't think you serve anyone's interests by trying to conduct a smear campaign suggesting anti-Semitism against anyone who disagrees with you. After a while, the charge of anti-Semitism loses it's credibility if it is misused in this way.
And, I would suggest that it is as racist as any other form of racism to suggest that anyone who disagrees with Jews is an anti-Semite. And it's just plain hateful, nasty, and evil-minded as well.