i'm also joined in the studio by sirjohn redwood. gentlemen, welcome. many more times, nigel nelson, are we going to have this conversation? these stories are tragic, yet they're becoming increasingly and depressingly familiar. teenagers, children killing children with knives. lessons will be learned. thoughts and prayers. nothing changes. when are we going to clamp down on the cancer of knife crime? >> well, i mean, i mean, they've tried clamping down many times. we've had knife amnesties. we are going through the process of banning zombie knives from getting into the country, from samurai style swords. the problem, really is your idea of a national emergency is a question of what it would look like. question of what it would look uke.the question of what it would look like. the answer, i think, is to actually enforce existing laws. there, there you can use them. you can use stop and search that there are a number of things you can do. >> but there's a reluctance to do that in case it's racist. sadiq khan tried to stamp it out when he was elected. poli