Five were arrested
All five were arrested on suspicion of using words or written material to stir up racial hatred, and four of them were also arrested on suspicion of incitement to murder.
Slogans on placards seen at the demonstration included "Free speech go to hell," "Behead the one who insults the prophet" and "Massacre those who insult Islam."
Police, who said they had received about 500 complaints about the demonstration, said they examined 60 hours of video footage from surveillance cameras.
Some 22 people have been considered for prosecution, but police said they were still trying to identify some of them.
"....still trying to identify some of them". Yes, I can see why it would take some time.
