muslim groups insult Christianity on Christmas at ST Pauls Cathedral

They stand outside of ST Pauls Cathedral in London during Christmas Mass and tell people that Christianity is false, Jesus was actually a muslim etc.. the below article announced their actions,
Radical Muslims Take Anti-Christian Protest to St Paul's Cathedral on Christmas Eve
A group of radical Muslims is planning to use St Paul's Cathedral to protest against the sins of British society and the fallacy of the Bible.

The protesters were due to gather putside the cathedral at 1pm, while a Christmas Eve Eucharist takes place inside.

Ahead of the protest, radical preacher Anjem Choudary claimed that Jesus belonged to Islam and that British society was riddled with "sin".

"We say Jesus is a Muslim prophet and not the Son of God," he said in a leaflet.

Choudary, a former solicitor, has previously been linked to raidical groups including Al Gruabba and Islam4Uk, which were banned by the government for inflammatory preaching and praising terroist attacks including 9/11 and the 7/7 London bombings.

Although Choudary and his fellow organisers claimed their meeting was simply a "Christmas Debate", they said they would attack a litany of supposed societal faults including "bribery, pornography, homosexuality, blasphemy and promiscuity".