When thought crimes carry harsher penalties than actual crimes against people.
The police are busy providing harsher punishment for sharing or having a media file that they "disapprove" of than if you were actually mugging someone or robbing them. You'd be out on bail right away if you did an actual crime against a person. But they want to use the process as a punishment to put fear and terror into the hearts of the local citizens that you best not do anything the government doesn't like.
The law they are using pretty much says any information or work of art, or document, or historical footage, or footage of an actual event, the government decides it doesn't like is now a crime to possess. So what's next? Documentaries discussing the very real issue of the lack of women's rights in certain middle eastern countries with a certain majority religion?
There are some very good reasons people may want to see the video & that is up to them. Sometimes people need to see what real evil actually is and what it looks like to understand why you don't want to allow people to get that way. For example they may want to see what the shooter did & how the victims reacted to debate and determine better methods for surviving attacks. Or you may want to be able to show the more twisted folk who might one day idolize the criminal as some kind of hero, that No, watch the video, he was no hero, just a sick twisted coward. Or when the accusations come out that it was faked and made up (much like the deniers in the atrocities of WWII) you can say, no, I saw it in detail & it was real and a real evil person did actual real evil things.
When you let the government decide what you can and cannot watch or know about and then allow the government to go harshly stomping on folks as they please for thought crimes or seeing what actually happened in an event, you might as well just give up your whole idea of free speech or free thought.