Perhaps, but I don’t exactly feel bad when said stalker gets accused of murder. You kinda find yourself hoping he did it, since it gives you that sense of justice, that the world is an understandable place. Some random guy who we have no evidence of just doesn’t come around and kill people–that’s just not right.
I’m not saying I’d go so far as to fight against someone being exonerated by the evidence, but I do understand the sense of disappointment.
Sometimes it’s because they have other evidence that makes them certain the accused did it, and the dna evidence isn’t actually conclusive. I’m not sure how that could be the case here, since it’d be hard for him to avoid leaving dna in a bite mark, but I don’t know anything about the case other than what’s in that article.
In general, though, I think it’s just that, once people have decided someone’s guilty, it’s really difficult to persuade them otherwise. I’ve seen it happen with much lesser crimes - someone is accused of stealing and completely exonerated, but still every time something else goes missing, eyes point to them. They might say something about “no smoke without fire,” not realising they were actually blinded by fog.
I’m confused - he was stalking his own wife in their own home?
DNA, if done correctly, proves who a biological a example, DNA from a rape/murder does not prove who the killer was or wasn’t. There could be a separate rapist. There could have been consensual sex prior to the crime. What it does is establish a link in the chain. It proves that a specific person had sex with the victim. It is up to the prosecution to build the rest of the chain and convince the jury that it is sound.
The inverse is the case for exonerations. If DNA shows that someone else had sex and that breaks the chain, then an exoneration is in order. If there is additional evidence that was never presented at trial, or a new theory of the crime still implicates the same person, then a retrial is in order.
If the only thing linking him directly to the crime was the bite, then there is no doubt this is the correct decision.