These articles do not appear to contradict what Halstead said at all.
The first link appears to be an opinion piece rather than a serious piece of analysis—for example it does not include any comparison of the rates of Police killing between the UK and the US. It complains that UK police haven’t been found guilty of murdering black men for a long time, but does not compare this to the number of unarmed black men shot by cops in the UK—a number which is approximately zero most years! It mentions that black men are imprisoned at higher rates than white men in the UK, but does not compare this to the rate at which they commit crimes, which is also significantly higher. Indeed, the only time it actually makes a direct comparison between the US and UK it actually (begrudgingly) agrees with Halstead:
Few people would deny that in many respects life is better for non-white people in the UK than in the US.
Overall I would not consider that article to be a particularly serious analysis of the issue.
Your second link (which I see you found by following a link in the Guardian article) is significantly more data-orientated, but again the only time it directly touches on the issue at hand it seems to agree with Halstead:
14% of deaths in police custody or otherwise following contact with the police since 1990 were BAME. This is proportionate to the population as at the 2011 census.
Finally, neither article contains any comparisons to the pandemic.
These articles do not appear to contradict what Halstead said at all.
The first link appears to be an opinion piece rather than a serious piece of analysis—for example it does not include any comparison of the rates of Police killing between the UK and the US. It complains that UK police haven’t been found guilty of murdering black men for a long time, but does not compare this to the number of unarmed black men shot by cops in the UK—a number which is approximately zero most years! It mentions that black men are imprisoned at higher rates than white men in the UK, but does not compare this to the rate at which they commit crimes, which is also significantly higher. Indeed, the only time it actually makes a direct comparison between the US and UK it actually (begrudgingly) agrees with Halstead:
Overall I would not consider that article to be a particularly serious analysis of the issue.
Your second link (which I see you found by following a link in the Guardian article) is significantly more data-orientated, but again the only time it directly touches on the issue at hand it seems to agree with Halstead:
Finally, neither article contains any comparisons to the pandemic.