This is the best summary I could come up with:

The monument is known as “Platform 17”, where 50,000 German Jews were deported to Nazi concentration and death camps at Riga, Warsaw, Auschwitz and Theresienstadt from 1941 onwards.

Police said two witnesses had reported seeing a man at dawn setting fire to the box of books – the “Bucherboxx”, an old telephone booth converted into a mini-library.

The "Bucherboxx”, from which anyone could borrow reading material related to the Holocaust, was the brainchild of sustainability activist Konrad Kutt, who came up with the idea of using decommissioned telephone booths as mini-libraries.

As part of the memorial, inaugurated in January 1998, Platform 17 now has 186 commemorative plaques alongside the track detailing the departure date of each train, the number of Jews on board and their final destination.

This latest incident of arson comes amid a rise in violent antisemitism across Germany, according to a report released by a Berlin-based watchdog organization with branches around the country.

In April, local police shot an armed, “mentally-confused” assailant who attacked patients and staff at a Jewish hospital in Berlin.

I’m a bot and I’m open source!

At the same weekend some religious extremist tried to burn down the monument for the gay and lesbian victims of Nazism also in Berlin.
Guess those are “isolated incidents” again…

We all know who the arsonists are. They are giving interviews on public broadcasting to Herr Biedermann.

Whoever did that should go to prison for a loooong time probably the same asshole that attacked the other memorial.