The entire "holocaust remembrance" is like a worldwide PTSD or something. 90% of the people only ever mention the 6 million Jews, who were killed in the death camps and executions. The Jews were by far the largest group, that was systematically slaughtered by the Nazis, but the actual number of people killed is probably twice that high. Other notable groups were Soviet POWs, Poles, Serbs and Disabled People.
But almost nobody ever mentions those other victims. Even weirder: The few cases, where I've seen people correcting others, that there have been way more than 'just' 6 million victims to the systematical genocide of the Nazis, have caused the purest form of autistic screeching I've ever witnessed.
So, if you find someone online 'remembering' the 6 million Jews (or better 'the 6 Million victims') who have died in the Holocaust, you have found a fucking asshole who is engaging the the oldest form of virtue signaling we have to date. This is a person, who just repeats that one, single number they have heard on TV, never picked up a fucking history book and is just posting this to make themselves feel better.