The UK is experiencing its worst rioting since 2011 amid far-right movements reacting to a misinformation campaign relating to a mass stabbing on Monday. Tensions flared in South Yorkshire on Sunday when anti-immigration demonstrators attacked a hotel used to house asylum seekers. UK authorities faced growing pressure on Sunday to put an end to England's worst rioting in 13 years after disturbances linked to child murders and involving far-right agitators flared across the country. Unrest related to misinformation about a mass stabbing that killed three young girls earlier this week has spread to multiple towns and cities, with anti-immigration demonstrators clashing with police. In the latest incident, trouble flared in Rotherham, South Yorkshire, on Sunday when masked anti-immigration demonstrators smashed several windows at a hotel that has been used to house asylum seekers.