It is an evil because there are infinite ways to solve any problem, not just this one. Describing some problem in no way validates any particular response as being even worth the trade-off let alone flat out necessary and unavoidable.

Further, the people promulgating this sort of solution know this. The evil is that they are wittingly using a problem as the excuse and the cover to get something else they want which they would otherwise never get and have no right to.

For everyone who is doing this knowingly, there are countless other sincere but unwitting tools haplessly just buying the line sold to them. So you might be able to say you are not evil for supporting this kind of policy, but all that means is that you are either a witting or unwitting tool of the evil policy.

"Rapes happen behind closed doors, therefore we have to remove all doors. No one denies that rape happens and that it's a bad thing. And it's irrerfutable that without doors that close, no one would be able to get away with a rape. And so, the only grown-up thing to do is agree to give up doors that close. It's not an evil at all."