People are comparing it to the times when here was less screening. Some people probably also assume that higher perceived level of threat that justifies tighte

People are comparing it to the times when here was less screening. Some people probably also assume that higher perceived level of threat that justifies tighter security is not a result of natural development, but of direct action by governments when carrying out their foreign policies. The vicious circle of "we go and do good in the faraway, they blow us up, we tighten local security and do more good in the faraway,…" begs to determine causation in this correlation.