Here's another example, from July 2018, in which questions are being raised about the fact that the BfV not only failed to stop the NSU, despite knowing about it, and even taking action to prevent discovery of evidence;
"Lawyers representing the victims’ families have accused the domestic intelligence agencies of actively sabotaging the prosecution’s investigation in order to protect its informants. During the trial, one employee at the BfV’s headquarters admitted to destroying files on seven informants only days after the existence of the NSU cell came to light in 2011.”
6/ 🧵