Youths attacked a French car dealership and a Greek-French supermarket chain with petrol bombs in Thessaloniki early yesterday in what is thought to be the latest show of violence from anarchist groups. Eight cars were damaged in yesterday’s attack on a Renault dealership while the Carrefour Marinopoulos store suffered minor damage. Nobody was injured in the raids and authorities did not make any arrests. Attacks from self-styled anarchists often intensify in the middle of November as the commemoration tomorrow of a 1973 student revolt that helped topple the seven-year military dictatorship approaches. Authorities are concerned, however, that the recent spate of attacks on French interests in Greece are intended to show signs of solidarity to rioters in France. A French car dealership in Athens was also firebombed on Sunday.