I have only seen one video: Ukrainians allegedly shooting Russian POWs in their knees who were firing artillery indiscriminately into Ukraine.
I have never heard of any other video, even in the most obscene and stupid of the Russian troll accounts. Otherwise it would be posted here... constantly!
It is highly likely that the “Ukrainians shooting POW” was a bit of Putinist Russia agitprop theater.
Russia has been planning their retreat from Kyiv for several weeks. Official briefings downplayed that theater, maps where changed, etc. Russia knew their crimes in Bucha were about to be uncovered. Russia faking Ukrainian crimes is the obvious answer to that: “everybody is doing it.”, etc. You can see the Russian propagandists run with that gaslighting even here.
That is why I added the word “allegedly.” I have seen some analysis of the video questioning it, but haven’t researched it thoroughly myself.
When the Ukroarmy surgeon chief said on TV that he ordered to torture the wounded, who are going to believe your shameless lies?
Ze’s spokesman Arestovich said his troops on TV to STOP FILMING AND UPLOADING it, not to stop torturing.