Several people have been arrested and weapons, including a knife, knuckle duster and hammers were seized, after far-right protesters clashed with anti-fascist groups at rival demonstrations in Dover.
Three men were arrested for public order offences, breaching the peace and possession of an offensive weapon.
Earlier, Maidstone services on the M20 were closed at around 11am after several coaches believed to be taking people to the protest were damaged.
Six people were injured and two coaches had swastikas painted on them in blood. One had its windscreen smashed as rival groups clashed.
Six men aged between 25 and 53 were arrested on suspicion of violent disorder.