ABUJA: Nigeria has arrested seven Polish nationals for raising Russian flags during anti-government protests this week in the northern state of Kano, Peter Afunanya, a spokesperson for the state security service, said on Wednesday. Hundreds of thousands of Nigerians have been protesting since Aug. 1 against President Bola Tinubu’s painful economic reforms that have seen a partial end to petrol and electricity subsidies, currency devaluation and inflation touching three-decade highs.