The organisation, Defend Our Juries said they carried out the protest in Nottingham and in other UK cities ‘in support of the deproscription of Palestine Action.’
Deputy Chief Constable Rob Griffin said: “Officers arrested 28 people at a protest near Central Library in Nottingham today.
“The protest was organised by Defend Our Juries in support of proscribed terror organisation Palestine Action.
“As described earlier today, it is a criminal offence under the Terrorism Act 2000 to support a proscribed organisation; this includes holding placards with slogans indicating that you support the group.
“There was an increased police presence in the area and when officers identified evidence that offences were being committed, positive action was taken.
“The protest went ahead with no violence or disorder.
“Whilst we will facilitate peaceful and lawful protest, we always wanted people to be aware that the law will be enforced. This has meant that people attending the protest and showing support for Palestine Action were arrested.”