Re: Is it possible to ban...
Pictures and videos can be incorporated with a security tag, much like the security dye that is used money boxes which goes off if the box is tampered with. Once the security tag has been added to the pictures or videos, a CRC value is immediately taken (CRC - cyclic redundancy check). This value is the error detecting code which can detect if changes to the raw data have been made, in this case, someone tampering with the security tag, the CRC value will be different. Doing it this way means 1) pictures and videos can be monitored across the internet (just follow the security tag) and b) if someone removes the security tag so people can avoid being caught, the CRC value will change and the authorities will know when it was changed.
The problem is the current law on such pictures and videos prevents anyone from owning or viewing them. This even applies to the police, lawyers and the courts unless the images are part of a ongoing court case and they are classed as evidence. So, if a security team or even the police was tasked with adding security tags to such pictures and videos, they have immediately broken the law. The law is very very specific on images and videos of child pornography. Even if the police wanted to use some to lay a trap to catch paedophiles out, they couldn't because they would technically be distributing these images, which falls foul of the law. The police are not allowed to break the law to uphold the law.
Even if there was a provision in the law that allowed the police to lay such traps, how long would it take before the methods used were leaked onto the internet for the deliberate purpose of allowing paedophiles to see how the police are laying traps so such people could avoid getting caught. There were two main police operations into child pornography and it caught people from all walks of life, lawyers, doctors, judges, police personnel, to name a few. These people will protect their own, hence the strong possibility of leaks.
As others have picked up on, the police and local councils are more concerned about keeping the ties/bands of the countries multi cultural heritage together than protecting the countries children from child rapists because they know if such incidents were reported as they happened, due to the ethnicity of the groups involved, it would have the potential for society to breakdown because groups of people would go around attacking those ethnic groups. A good example is that of Tommy Robinson, regardless of his past, he went around the country actively reporting on this rape gangs, trying to bring it to the public's attention more, to show the country what is going on behind their backs and the fact the police and councils tried to hide it, sweep it under the carpet and look what those in power did to him, imprisoned him and removed ALL of his social media access to make sure he cannot tell the public what is going on with regards to the ongoing coverup of Asian rape gangs in the UK.