I am not Jewish nor Mormon, but I am appauled by this non sense! I agree that it really doesnt affect anyone since LDS is really a load of crap, but it”s disrespectful to infringe on someone”s personal beliefs. That is why proxy can only be done after life. Living people would not stand for such non-sense. Then members of the LDS would see that no one wants to be in their cult. Because I am sure 9 times (at least) out of ten they would be rejected.

Volokh: If you’re Mormon, then presumably you’d want your relatives baptized. If you’re not Mormon, then presumably you would think that some Mormon in some temple somewhere going through some ritual while mentioning people’s names would be spiritually pointless. It would have no effect on the people, on their afterlives (if you think they have afterlives), on God, or on anything else. So what’s the problem?
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The Mormons aren’t forcing anything on any living person. They’re not exhuming anyone’s body. They aren’t insulting anyone, except insofar as they’re suggesting that their religion is the right one, and that people ought to want to convert to it — and if that itself qualifies as an insult, then it seems to me that people are too easily insulted.

Jaffe: I actually find it somewhat endearing that Mormons are concerned enough about my erstwhile soul to try and protect it in a non-intrusive manner after my death. Other religious groups are not so considerate and instead seek to intimidate the @#%$ out of you or otherwise confront and demean you while you are alive in a supposed effort to save your soul. I have my doubts about the true motives of the hell-and-brimstone types, but the Mormons seem perfectly genuine to me. At worst it is no-harm, no-foul; at best they do me a great service.

http://volokh.com/2002_12_08_volokh_archive.html

Rabbi Shmuley Boteach is similarly unimpressed with complaints about vicarious baptism:

I could not care less if the Mormons baptize me after I’m dead. It won’t affect me. I’ll always be a Jew, in this life and the next. If this is part of Mormon practice and belief, and they do it in the privacy of their own ritual, and it doesn’t affect me in the slightest, why should I care? People’s beliefs are their own business. It’s how they treat others that is everyone’s business. What I care about is how much the Mormons support Israel today, not what they do with Jewish souls in what they regard as the afterlife.

http://worldnetdaily.com/news/article.asp?ARTICLE_ID=36329

So I think you overstate your criticism when you characterize *all* Jews as taking offense to LDS proxy baptisms.