Yes the Gastarbeiter issue has been so for over 50 years. I remember the Moluccan terrorist actions in the Netherlands in the late seventies, and I have been done with that country for a good while. Now, I am witnessing the same syndrome of no-go zones and sprouting mosques in God-zone, New Zealand of all places. Yeah, we Christians are accepting of other religions, but the favor is not returned. The NZ government is filled with Canadians, Americans, South Afrians, Indians, Chinese, as well as a rabidly Marxist Maori faction. But that is what the population voted for. So go figure.

Unfortunately the European governments have been trying to address failing birth-rates in their native populations with this theory of multi-culturism, which is really a recipe for trouble. What you get is brown taxi-drivers and rubbish picker uppers, and a disgruntled, petrol-and-rock-throwing yoof that feels entitled to ram-raid jewellery shops and wield hammers in malls.

But to the point: The security at those military facility must be preddy lax, if in the last 24 hours there have been two water-poisoning events. Mind you, it could be a scare-campaign to get more funding from Central Gevernment, purely for the purpose of the hiring of security guards, as @eagle-eyes2020 has pointed out.