I think it's the establishment, i.e. the old wealthy families who run things, are very concerned with the migrants crisis and the real possibility to lose control.
Lol. These "old wealthy families" caused the "migrant crisis"
Because they needed cheap labour. Now they're scared this cheap labor will get out of their control.
It already has gotten out of control, hundreds of thousands of people crossed the borders without any checks. There was also this bizarre case of a man now pre-crime style accused of terrorism, although the charges seem very questionable when you look into it: