There’s always been knife crime. Was a huge problem in Victorian England.
But I agree parenting is facing a huge challenge right now, IMHO because of the lack of reference points from our own parents and grandparents on how to deal with common risks and problems. In one century, we’ve been through huge societal shifts in terms of community and family. As with everything, there are pros and cons.
Community is no longer confined to the family, neighbourhood, places of worship etc. You can be in a community with anyone in the world online. For some people, who were wronged or limited by their family, culture or IRL community, that can be a good thing. There’s a means of escape.
But it does make it harder for parents, who have less control and no reference points. You can’t think, “How did my nan deal with this, or my mum”, as they didn’t have to. When I was a teenager, the only way I could talk to anyone was if they came to our home, I spoke to them on the phone in the hall or I met them elsewhere. But my kids can be messaging anyone, even while with me.
All you can do is give them an anchor. Develop trust, open communication, let them know they can tell you anything without judgement, talk to them a lot about issues of they day and your view of them, so you naturally pass on wisdom, e.g. on how to stay safe whether it’s crime, drugs, sex, manipulative people etc. Encourage them to reason rather than react with emotion.
And realise how much kids need and want the guidance and support of adults IRL. They’ll never admit it. They may behave terribly. But I’m sure we can all think of things our parents and other adults (teachers etc) said to us in the past that have shaped our thinking, stayed with us until this day and keep coming back to us at moments of need. Your parents values and advice do stay with you.