As to the document you posted... That document is not from OSCE. OSCE just added a header to it. It's entirey written by https://democracyfund.ru/ . So it can hardly be described as created by a "western body". Also OSCE is not a purely western body anyway. It includes Russia, Azerbaijan, Turkey, and many other eastern european countries.
Most importantly, it's not a report from an official fact finding mission (which is a specialist endeavor to send observers to a location to gather facts regardless of the meaning of such facts, like movements and activities of armed forces, shots being fired, destroyed property, documenting casualties, etc.) with summary statistics, etc. The document you posted is composed of random interviews with released prisoners from UA prisons. I guess it has some value, torture by UA security apparatus may have been happening as described, but it's not relevant to what I asked for in my reply to you. (which was to take into account results from actual fact finding missions, which is about documented facts, not about interviews or hearsay)
And yes, news outlets are about clicks and speed and some about shock value, as we know. I agree with you that they sometimes report complete crap. Everyone needs to take individual news reports with a grain of salt. Game footage was reported as actual war footage by a Russian embassy on twitter during Syria war. There's stupidity on both sides, you know. ;)
I mean few weeks ago Italian main TV channel have passed "the bombing of Kiev" witch was recognized quickly as a cut-scene of the game War Thunder. Then various westerns media have publish a news about a correspondent killed on duty, the same one declared killed an year or so in Kabul. Other medias show pictures of crying women saying they are Ukrainian in tears for the Russian bombing, actually those photos came from AFP/2014 and were really Ukrainian women in tears, only they were Russian-speaking ones in tear for Euromaidan massacres.
Since I'm not there, not I know in person anyone there I can't say who bombed who nor if there war really such bombing at all. While I can reason at the macro level, because at micro level anyone can say no matter what it's next to impossible prove that true or false if not done so badly like actual propaganda, but at larger scale is equally next to impossible hiding things and reasoning about their real reasons is far easier.
Of course the fact that me, myself and I fails to see a sense in something does not disprove that something, but connecting dots help and the actual propaganda, on both sides, reached a level that's very easy to spot it.