Bucha is not a hoax
Putin is claiming that the bodies we’ve seen in Bucha and elsewhere were planted after the Russian army were driven out of the area. The New York Times used satellite imagery and showed definitively that the murders had to happen during the Russian occupation.
That link should get you past the paywall for at least a week or two. Their work is well worth looking at. It’s meticulous.
ETA: The Washington Post has a detailed account of the brutality visited on the people of Chernihiv, a city which has been returned to Ukranian control, though there is great concern that the Russian army may return. Hard to read, but important (also a non-paywalled link, at least for a while).