>> tucker: after several fatal terror attacks hit london last year, the mayor who is a demagogue tried to placate his critics by saying overall, london is the world's safest city. watch. >> london is the safest global city in the world. we are a very safe city. >> tucker: it's ridiculous now. a wave of stabbings have given london a higher murder rate than new york city. six teenagers were stabbed in london and four separate incidents within a span of 90 minutes. why is this happening? wise and exhilarating? kitty hopkins, a lifelong resident of the u.k. joins us now. what's going on in london?