Speaking to Daybreak, Muslim political expert Mohammed Ansar said everyone needs to get together to "condemn all acts of violence" in the UK.
He said: "We need to invite people of all faiths, all beliefs, all religions, and of none to come together and to stand shoulder to shoulder and to actively condemn all acts of violence and all acts of terrorism on our streets."
More top news
Harry Potter fans today get their first glimpse of the wizard's wife and son as character portraits are revealed ahead of the upcoming play.
Gary Barlow performed an impromptu gig in a busy shopping centre.
Stephen Hawking said a Brexit would make Britain more "isolated and insular".