The Munich Putsch was a failure. As a result, the Nazi party was banned, and Hitler was prevented from speaking in public until 1927. Hitler went to prison, where he wrote Mein Kampf. Hitler decided that he would never come to power by revolution. He realised that he would have to use constitutional means, so he organised: propaganda campaigns, mergers with other right-wing parties, local branches of the party, which tried to get Nazis elected to the Reichstag and the SS as his personal bodyguard, which was set up in 1925.