Behind the false moral outrage of British killers at Russian killers, there may be a fear that Russia is still the Second World War victor we merely pretend to be.
After the Second World War, the victors became the United Nations Security Council, the top dogs effectively set up to rule the post-war world order by approving international peacekeeping missions and interventions and providing the military power to enforce them. This was a convenient compromise between brute military realities and the easily corrupted rule of international law.
Powers of the Second World War
Some fools compared the US and UK's pointless lynching and destruction of small Iraq with the Allied victory over Nazi Germany in World War Two. Similar such fools here now belittle the Russian war in Ukraine as somehow inferior to the West's displays of power, despite it being something undertaken against a powerful enemy with heavy foreign support and modern weaponry. It is no exaggeration to say that Ukraine is the most heavily-equipped and powerful opponent to have been confronted by one of the Security Council powers since World War Two. The UK simply doesn't dare wage war on large or heavily-equipped nations, no matter how much it hates them.
Western militaries remain too skittish to attempt anything similar to Russia's war in Ukraine when it comes to countries they complain about, and the reason may have nothing to do with either morality or military astuteness. It could be cravenness on the part of our country, which only attacks the most dilapidated, isolated, small nations where an easy victory can be claimed to much fanfare, and backs away from threats that could actually imperil Western troops.
The Russians evidently do not suffer the above problem, being willing to dive into perilous battles against their enemies as they did in the Second World War, and the resulting perceived difference in the character of our countries may be what actually scares us in the West. What Russia is doing in Ukraine could be an almost precise re-enactment of operations against Nazi Germany. It is fought on some of the same battlefields as that original "Great Patriotic War", as the Russians call it.
Propaganda and reality
The Second World War is certainly on many minds in Great Britain when we think of the conflict in Ukraine. Propaganda coverage and government statements in the UK somewhat resemble those of the Second World War, and the UK kept making World War Two references in the days leading to the outbreak of hostilities. Amid these continuous comparisons, there is likely to be a subconscious comparison between the craven modern Britain and the power that helped win the Second World War.
The unflattering reality is that the UK is not the same power it was in the Second World War. At that time, the UK was independent and played a leading role, devising its own strategies and pursuing its own interests. The US intervened to support the UK, which had entered into the war without any real need for a coalition. Now, the UK is merely led by lackeys of the United States.
Pretend power
Britain's attempts to look tough are now based on the cosplay of our leaders, who model themselves on iconic politicians of the past because they have no identity of their own. At the same time, many in the UK are likely to possess a kind of football hooligan envy of Russia, because that country is acting like the same beast it used to be in the past, whereas the UK is now nothing much more than a weak accomplice. Rather than acknowledge our country's inferior position and microscopic influence, they will claim the Russians are cheats or dishonourable in some way. This way, our subconscious awareness of our own weakness and inferiority is exploited to encourage hatred of the other country.
Where the UK and Russia are similar lies in the dismantlement of their broader empires, both voluntarily. However, where one began to live in its own empire's shadow and compensate with bombast, the character of the other may have remained the same, able to demonstrate its status with the resolve and steel that made it a victor in the Second World War.
The UN Security Council represented a compromise between the reality of military power and the desire for the rule of international law. By painting a member of it as our enemy, when they still have the military power, we risk seeing a military reality that is misaligned with our pronouncements about international law. This will make us like a police officer who can't arrest anyone or even get up from his chair.