The dairy of 09 October ,1942 describes a very depressing news . What is it about ?

In her entry for October 9th, Anne notes the depressing news that the Gestapo has been gathering Jews (including their friends) and transporting them to Westerbork, a concentration camp.

Our many Jewish friends and acquaintances are being taken away in droves. The Gestapo is treating them very roughly and transporting them in cattle cars to Westerbork, the big camp in Drenthe to which they're sending all the Jews.