When Matteoti, a political opponent of the Fascists, gave a speech protesting the Fascist violence, he was murdered. Politicians quit parliament in the Aventine Secession in an attempt to get Mussolini removed from power by the king, but this only showed the weakness of both the parliament and the king to stop Mussolini’s consolidation of power.
The parliament, with Mussolini’s opposition now gone, provided Mussolini with even greater support. And the king, who was still more afraid of communism than fascism, refused to do anything to remove Mussolini from power or check his sometimes violent use of it.
From the fact that violence helped Mussolini consolidate power and his opposition was weak in stopping it, we can see that both these elements contributed to Mussolini’s effectiveness in consolidating his power over Italy.
Other pieces of evidence that could use to develop different point and provide it with support:
Lateran Agreements in 1929 gave the Catholic Church’s full support to the Fascists. Mussolini recognized the Vatican as an independent state and Catholic education was required throughout Italy’s schools