Witnesses from Liverpool and Belfast share what they saw on the groundpublished at 11:26 British Summer Time 4 August
We can now bring you some lines from people who saw the demonstrations yesterday.
Sarah from Liverpool told BBC Radio 5's Stephen Nolan that she got caught up in the protests while she was in the city centre for an appointment. Sarah says she was with her family at the time.
"It was very quiet at the start, which is very unnatural for Liverpool," she says. "I felt in the air that something was going to kick off and if you had any sense, you’d get yourself out of the city centre."
Shops and bars starting closing early and police were warning people to leave the area, she adds.
Sarah says she saw two demonstrators wearing black criticising immigrants and police.
Ian from Belfast also witnessed the unrest in his city.
He says he and his wife found themselves in the thick of it by chance. He says he saw anti-fascist protestors and about 15 to 30 police vehicles parked nearby, plus anti-immigration demonstrators, some of them throwing flares and eggs.
"It was getting very nasty," he says.