If we want to increase the level of security, we have to sacrifice something. I mean our freedom.
On the other hand, it is not possible to have security at every public entrance. For me, early prevention and especially detection of behaviour that subsequently leads to horrific acts is essential. Early detection of radicalisation is very important. Safety is everybody’s business, so let us take note of how our classmates or colleagues or friends behave and try to help them if necessary.
Source: https://www.facebook.com/bartosekKDU/videos/pokud-chceme-žít in peace and security