Six people have been arrested during the latest protest outside a hotel used to house asylum seekers in Essex.
Bottles and smoke flares were thrown towards police vehicles during the demonstration which saw more than 1,000 people gathered at the site of the Bell Hotel in Epping.
Ch Supt Simon Anslow said it was disappointing to see the protest escalate into “mindless thuggery”.
The disorder followed the arrest and charge of an asylum seeker last week on suspicion of alleged sexual assaults in the town.
“Our cells, which have been filling up throughout the evening, are ready for you,” Ch Supt Anslow warned in a statement.
“I think I speak for all of us – including the people of Epping – when I say we’ve had enough of your criminality,” he added.
Police put in place a Section 35 dispersal order to “prevent further crime or anti-social behaviour” overnight.
Demonstrators on Sunday chanted “send them home” and “save our kids”, as projectiles were thrown towards police vans blocking the entrance to the hotel.
Many had travelled from across the UK, with one woman from Scotland telling the BBC she felt compelled to “support local people and get the asylum seekers out”.
Police also surrounded a counter-protester, an elderly woman, before escorting her out of the area as masked protesters followed her and shouted abuse.