[ruiner]

You'll look worse if you try to cover your tracks.

Speak in confidence with an authority figure you can trust and offer to show him your hotmail account as proof. Take the "I'm not sure it its them, or someone using their account" approach.

If you try to sneak it will look like a false accusation.

[sourcery]

To be clear: you want to send copies of e-mails you've received, with all reference to your identity removed, but not that of those who sent you the e-mails?

[hiredhand]

Look up the local field office nearest you for the FBI and talk to them.

Not to heighten your paranoia, but if you use a fax, you're going to leave SMDR (station message detail recording) records on all telephone switches in the path. Supposing they have a sympathazer locally who has anything to do with IT, or inside plant (PBX maintenance), they'll find out more about you by the phone number you use to send the fax.

If you're still serious about scrubbing the SMTP header, I can tell you what you need to scrub, but I'd contact the FBI computer crime folks.

[Tax Government]

Hire a lawyer; let him/her forward the emails with a cover letter. That may put the fear of god in somebody.

[Tax Government]

I believe several organizations exist that can help Jewish people counter discrimination and form a legal response to it. Please contact Rabbis you may know, and try to get a referral.

[Redcloak]

You could try an anonymous remailer. Send the messages with their headers (redacted to remove your ID, of course) as plain text. The only problem is that you have no way of knowing if they received the message or not. A university mailserver may reject mail from the remailer's domain.

[KJC1]

Have they threatened you in any way?

I don't want to freak you out, but I just happened to be reading this on Michelle Malkin's blog.
http://michellemalkin.com/archives/001449.htm

[Free and Armed]

I don't know crap about computers, but good luck with that. I'll tell you, I don't mean to sound like I'm trying to be a tough guy or a drama queen, and I'm not trying to make you paranoid, but if I started getting threats from local Muslims, my home would go to DEFCON 1 after reading those stories about Muslims tracking down "infidels" online then murdering them. I mean all my rifles would be loaded and ready to go so the rest of the family could pick them up and use 'em, and the doors would remain locked until the threats subsided. Not all of them are bad, but Islam is a dangerous cult, and you just can't trust the ones who spew violence out of their mouths. Those in our own borders who do that crap should be taken very seriously. I hope the hospital nails those bastards.