Sweden has an epidemic of gang warfare, with shootings and bombings taking place, and many perpetrators being under 18. The Swedish system has until recently been based on the assumption of a society of people who can be trusted to follow the rules (for example, you can look up anyone’s home address and how much they earn in a public database). They have only recently started changing this in response to the gang crisis, i.e. only recently is it possible for witnesses to anonymously testify in trials, which led to many defendants walking free as witnesses justifiably feared retribution.

If the wiretapping is targeted at individual suspects rather than mass surveillance of everyone in a group (say, under-18s in problematic suburbs, or from racialised minorities), it doesn’t sound entirely unreasonable.