Something you could add for them, and something that a lot of adults today don't realize, is that when the Allies liberated the death camps, they did not generally free residents wearing the pink triangle — meaning people who were in the camps because they were gay or transgender. Many or most of them were sent to German prisons to serve out long sentences. American, British, and French occupying forces viewed them as common criminals rather than as victims of atrocities.
Many decades passed before the unified German state changed the law criminalizing homosexuality, and much more time passed before the German state decided to offer compensation and help to the gay and trans people they had sent to concentration camps and later to prison.
By then, most of them were dead.