An 87-year-old Holocaust survivor has been questioned by the Metropolitan Police after laying flowers in London’s Trafalgar Square during a pro-Palestine protest.

The pro-Palestinian rally organizer is among the arrestees detained by London's Met police.

The UK’s pro-Palestinian groups condemn London’s MET police for banning a Palestine march.

Pro-Palestinian rallies have taken place in major cities worldwide, including the US, the UK, and other European nations, and countries such as South Africa, the Philippines, Indonesia and Australia.

Footage showed police using what appeared to be an irritant to spray people, who were forced to retreat.

US Police at the University of Virginia have clashed with pro-Palestinian protesters who refused to remove tents from campus, arresting at least 25 students.

US police clash with pro-Palestine protesters at tent encampments from Massachusetts to California.