Dover has been brought to a standstill by a huge police operation as far-right and counter anti-fascist groups protest.
Roads have been closed as demonstrators march separate routes through the port town in Kent.
Police have lined the streets in a bid to prevent a repeat of violent clashes between the two groups in January.
Anti-immigration demonstrators chanted "no more refugees" as they set off, surrounded by police.
Highways England tweeted that traffic was being held on the A20 in both directions between the B2011 and A256 and on the A2 between the A20 and A256.
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Kent Police said eight people had been arrested in Marine Parade for failing to comply with conditions regarding the right to assembly which include a prohibition on wearing masks.