Complex sentence: Narodni dom was a Slovene minority's Community Hall in Trieste, burned down by the Fascist squads in June 1920, and it became the symbol of Fascist Italianization in the Julian March.
Split into simpler sentences: Narodni dom was a Slovene minority's Community Hall in Trieste, burnt by the Fascist squads in June 1920. It became the symbol of Fascist Italianization in the Julian March.