On Wednesday, the airline announced it had filed proceedings against the passenger, whose behaviour on the flight last April was described as "inexcusable" and "completely unacceptable".

The failure was "egregious and inexcusable", Mr Johnson told the BBC.

"The decision not to impose a lifetime ban on David Tudor seems absolutely inexcusable in today's context and would not have been made today."

NCAA, “makes it inexcusable for him to have waited over a decade more to bring a similar claim yet again.”

Conflating neo-Nazis with protesters for Palestinian human rights is in itself problematic, but blurring the hard right’s direct connection to white nationalism with “let’s be fair to both sides” comments was inexcusable.