"Zeus hospitable" is the name of the vast police operation launched by the Greek government against foreigners. As hospitality, it is raids and arrests based on racial profiling, and lock those who are in illegal situation in detention centers. Greece in economical crisis has launched a program of construction or development of thirty centers for thousand people each, with the financial support of the European Union.
"Thetis" is the name of the operation launched by the police and the Ministry of Health. The procedure is essentially the same: drug users are rounded up in the streets of Athens, handcuffed and taken away - rather curiously - in detention centers for foreigners quite far from Athens. There, they are identified and undergo a medical examination, and then are released and must fend for return to Athens.