Wiretap suspects, seize voicemail, and track internet communication
They made numerous committees and agencies to fight corruption both in the government and the private sector. These agencies and committees would revise companies and see if they were bad to the workers and would protect the workers more which reduced the company's powers.
The final solution was the Nazis' answer to a problem that they didn't have. It consisted of demonizing and persecuting people they didn't like, and then working them, starving them, and killing them. Roughly six million Jews died during the Nazi Holocaust.