 Complete the following phrase:  Both right-wing and left-wing paramilitary forces were created during the 20s. The Heimwehr Home Resistance first appeared on 12 May 1920 and became progressively organised over the next three years and the Republikanischer Schutzbund was formed in response to this on 19 February 1923. From 2 April 1923 to 30 September there were violent clashes between Socialists and Nazis in Vienna. That on 2 April, referred to as Schlacht auf dem Exelberg Battle of Exelberg, involved 300 Nazis against 90 Socialists Steininger 2008. Further episodes occurred on 4 May and 30 September 1923. A clash between those groups in Schattendorf, Burgenland, on 30 January 1927 led to the death of a man and a child. Right-wing veterans were indicted at a court in Vienna, but acquitted in a jury trial. This led to massive protests and a fire at the Justizpalast in Vienna. In the 