Demonstrators and police clashed outside the offices of Naples newspaper Il Mattino Wednesday while anti-immigrant, anti-euro Northern League leader Matteo Salvini was inside addressing a forum.
The protesters shouted slogans against the formerly secessionist leader, who has turned his party into a nationwide one but still regularly gets barracked in southern Italy.
"I'm ready to challenge (ex-premier and likely future premiership candidate Matteo) Renzi (of the ruling centre-left Democratic Party) and govern Italy better from tomorrow," Salvini told the forum.
He issued a message for Neapolitans: "Let's get to know one another, let's learn to respect each other".
The demonstrators were from leftist and anarchist squats known as 'social centres' in Italy.
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