Meloni heads Italy’s most rightwing government since the second world war. Italy’s criminal code punishes with a fine ranging from €1,000 to €5,000 anyone who “publicly defames the republic”, which includes the government, parliament, the courts and the army.
Per Wikipedia:
So it might be slander, dpending on Italy’s laws. :(
That might apply to the ‘piece of shit’ part, but the ‘fascist’ and ‘racist’ part are true, and not damaging her reputation, as her reputation with her voters is built upon these