Vienna Terrorist Attack 2020

As a consequence of the attack in Vienna, the German police union ("Gewerkschaft der Polizei") is demanding that people who pose a risk to society are monitored by federal authorities in the future.
Complete monitoring of potential terrorists is no longer possible due to the lack of personnel at the state level.
Berlin currently counts 88 Islamists, whose surveillance would require 2,640 officials. The land has 190 at its disposal.
The man accused of carrying out the attack is a 20-year-old "Islamist terrorist" who was released early from jail in December 2019. Police have carried out a series of raids and made 14 arrests in the hours since a gunman murdered four people in the heart of Vienna.