A widely discussed series of events there included the demand for a so-called trigger warning to students who might be upset reading "Antigone";

Merkel's warning that the situation will not be resolved with a single "spectacular event" alarmed analysts, who fear that further indecision could trigger another stage of the crisis.

If the warning threshold is too close to the quota, it is possible that one message could trigger both the threshold warning and the over-quota actions.