//For example, the agreed-upon rights include a right not to be tortured, degraded, executed, enslaved, imprisoned without trial, and tried fairly.//
Indeed they do, Jim. So it would be interesting to learn just how many people have suffered any of those treatments at the hands of the State in, say, the 56 years since the last execution was carried out in the UK. I would hazard a guess that the number is precisely zero. So the question is, why does the UK need to have an Act which prevents those actions by the State when the State has absolutely no intention of inflicting any of them on anybody? Is it in case a government comes to power that is intent on restoring some of those practices, most of which have been absent in our culture for many hundreds of years before the HRA became law? If so, why wasn’t such a law introduced earlier?
//Secondly, I'm confused why the "right to safety" of humans in Jamaica is an apparent non-issue, or why the matter is apparently considered dealt with once these criminals have been deported.//
It’s not a non-issue but it isn’t an issue the UK should concern itself with (in the same way that I doubt the Jamaican government is overly concerned about the safety of humans in the UK). Being a sovereign nation means you can rid your borders of people that have arrived here but whom we don’t want here. It’s bad enough having to deal with home grown violence and other serious crime; there’s no real reason why we should have to deal with the imported variety.
//If this man had been successfully deported to Jamaica, what chance that he'd have murdered somebody over there? Fairly high, I should think,//
Exactly. That’s why he wasn’t wanted here.
//Therefore the assessment that he was ready for release was clearly premature, and *that* is the problem that needs fixing first.//
He wasn’t “ready for release.” He had been sentenced to a determinate sentence and had served it (well at least the proportion of it that the law says he should). His being ready for release or not was not a consideration. Or are you suggesting that all those in prison must undergo an assessment to determine whether they are “ready for release” or not?
Anyway, the review is smoke and mirrors. The HRA simply allows people to pursue actions against the UK government without having to trouble the European Court of Human Rights. If they lose in the UK courts they can still pursue their action at the ECHR. If the HRA is completely repealed or overhauled so as to make it more restrictive they would still have that option and the only way to remove it is to withdraw from the ECHR.