“I guarantee you will regret taking part in this disorder, either directly or through those whipping it up online,” Sir Keir Starmer warned in a broadcast address.
Referring to a violent attack on a Rotherham hotel suspected to have harbored migrants, he stated that there is no justification for taking such action.
Masked individuals threw wood and fire extinguishers at police officers outside the Holiday Inn Express, and several stormed inside.
“People in our country have a right to feel safe, but we have seen Muslim communities targeted and attacked regularly.
The Home Office stated on Sunday that mosques will be given more protection under new emergency measures.
It stated that mosques at risk of violent attacks can be provided with additional security personnel as part of a quick security response to supplement the efforts of local police.