Leftists believe that the White Helmets of Aleppo were just a US propaganda stunt against the brave heroes defending the Syrian People Assad and Putin. They believe that the photos if the dead and gassed Syrian children are fake too They don't believe that Aleppo was even bombed and that all the deaths there were due to "US supported terrorists like ISIL"
The sad thing is that there are cases where accusations of government brutality ARE largely bogus political-economic motivated media and state propaganda - Haiti under Aristide, Venezuela for several years now, and Bolivia will probably be next. But thanks to the new risible attitudes of the left toward Assad and his sponsor Putin, the left's viewpoints on these matters will have little credibility.
And we aren't even talking yet about all of the left's totally nutty conspiracy theories the new-new-left shares with the nutty right.
The left has abandoned the concept of human rights itself. The left can go to hell.