The government did get more than third of the votes. So this is the choice of democratically elected government and the voters and as such should be followed.
You could probably make an ECHR argument about it, but even Germany who are most paranoid about Stasi-like behavior have some sort of rights carveout for law enforcement purposes.
Yes, German law enforcement does have a rights carveout, but not nearly as big of one as in the UK (or the US).
/j