Update 2: Let me spell this out. Melissa quit the campaign because she was scared by threats of death and rape. The word I'm hearing is that the campaign really was reluctant to accept her resignation, but how could they argue with a women who thought that if she stayed on she might be raped, battered, or murdered for doing so? As Chris Bowers points out [1], this is a pattern from the right wing - these denunciation campaigns are always backed up by threats of physical violence. Donohue got what he wanted because of the people who respond to his sort of rhetoric by threatening women with rape.

Update Melissa McEwan has also resigned, [2] citing as her reason the same sort of threats. The right wing has discovered that intimidation, threats and that insisting their religion is off limit from any critique works. They got their two scalps, and they'll be back for more.

This is the sort of behaviour that Malkin and Donohue encourage. It's what happens when they attack people. If you're squeamish, don't go there. You've been warned. (Threats below the fold, or at the link)

The link. [3]

Problem with women like you, you just need a good fucking from a real man! Living in Texas myself, I know you haven't found that real Texan yet. But once your liberal pro feminist ass gets a real good fucking, you might see the light. Until then, enjoy your battery operated toys b/c most real men wouldn't want to give you the fucking you deserve b/c the shit that would come out of you ears...

...i like the way you trash talk i don't particularly want to have sex with you but i would like a blow job...

...Amanda,
after reading your vile screed against Catholics and the Holy Spirit, I just had to see what you looked like. (I envisioned you eyebrow-less, with no visible pupils, and a blank, dead stare.) I see I was correct about the blank, dead stare, but other than that you're not too bad. I then thought maybe you were mad at God (and by proxy Catholics) for making you ugly, but now I'm figuring you're just mad at him for making you a woman...

...It's just too bad your mother didn't abort you. You are nothing more than a filthy mouth slut. I bet a couple of years in Iraq being raped and beaten daily would help you appreciate America a little. Need a plane ticket ?...

...YOU RACIST WHORE. FAT UGLY BITCH. SUCK MY LONG COCK ASSHOLE I HOPE YOU KIDS NEVER LIVE AND YOUR PARENTS DIE A TRAGIC DEATH YOU ASSHOLE BITCH!
I HOPE YOUR WOMB IS BARREN AND YOUR CAREER PLUMMETS TO HELL YOU BITCH...

People like this are only emboldened by what they consider a victory, since the vast majority of them are cowards and bullies.

Their behaviour should make it really clear whose side you want to be on in these fights - and isn't Donohue's or Michelle Malkin's.

You don't appease people like this, you attack them.

When Michelle Malkin published the contact information of protestors in the past, these sorts of threats were made to them as well. This is a pattern.