The OWS claim is false and I strongly suspect the Obama staff worker claim is false.
I agree and I am also doubtful that Adam Lanza, who by all accounts was a friendless recluse who didn’t even have a driver’s license, ever bothered to register to vote.
As for the “hated Christians” claim, the sole source for that seems to be a fellow named Trevor L. Todd who sold his “exclusive” story to the National Enquirer when he claimed he was a former classmate of Lanza and claimed to have seen Lanza’s website devoted to Satan. One problem – Todd seems to have been the only person on the entire planet to have seen this supposed website. No one has verified his claim but his claim via the National Enquirer as been repeated all over the net mostly on Christian and conservative blogs and posted here several times.