Maybe some Mormons could help me out here - I thought murder was an unforgivable sin - so would any known, certain murderer like Hitler be posthumously baptized?
No, shouldn’t be. Most of these famous (or infamous) people’s names have been submitted by individuals in the church, that are counter to the accepted rules set in place.
At any rate, it doesn’t matter. It’s an outward ordinance that, according to the LDS belief, is only valid if accepted by the individual on the other side. The link I provided earlier goes into the why’s and what pretty well.
Uh; not quite.
Christ's BLOOD can't cover that knid of sin; only the perp's OWN blood can; thus the Firing Squad type of Execution in Utah.
http://en.wikipedia.org/wiki/Blood_atonement