politicians in the uk. boris johnson so far is saying now is not the time. >> kendis, good morning. a real debate right now in the uk about how to keep members of parliament safe without cutting them off from the people they represent. as you said, london's metropolitan police overnight declaring the killing of sir david a terrorist incident, saying it was possibly motivated by an islamist extremist ideology. they have a 25-year-old british suspect in custody. they have not yet released his name nor has he formally been charged with a crime. as you saw, prime minister boris johnson attending this morning a memorial for his colleague from britain's ruling conservative party. last night the prime minister led a wave of tributes to sir david. let's listen to what he had to say. >> above all, he was one of the kindest, nicest, most gentle