Ang on Ang on Ang on
The people who compare this guy's case to a passenger making an unsuitable remark at security are way off the beam.
Where did this fellow make his statement? At security? In an aircraft or a public area of an airport?
No! It was in a council office! I hate council offices, and I hate them even more when I see what petty jealous little bums will do to ruin a bloke's career. Aided and abetted by other vindictive bits of work, along the security chain, evidently. Shades of the third Reich.
What is indefensible is his shouting -and behaviour but that is not a terrorist threat, nor is it a security matter.
Now if I had an aeroplane, I might feel inclined to drive into -- oh, er perhaps not...