The article inverts 180 deg the truth about those pro-nazi extremists. Italian media said that in reality they fought (as part of self-armed group) alongside the Ukrainian army against the separatists in Eastern Ukraine. One of such thugs was recently sentenced to 20+ years behind the bars for killing an Italian journalist who was filming combat operations in Ukraine.
It is the Ukrainian government who often supports (or at least have their eyes closed with regards to) far-right extremists and even rename streets and squares in the names of the nazi collaborators.
And the reason why they plotted an attack against this Italian politician is because he openly suggested to cancel "sanctions" against Russia as they negatively impact the Italian economy.