"This is not a political strike," he continued and said people striking "are ordinary men and women that want a decent day's pay for a decent days work".
He added: "You're just peddling nonsense and I'm sick and tired of hearing it from politicians who come out with this rubbish and journalists who just recycle it."
"What we want is a pay deal, we want a set of conditions we can work with, and we want job security. That's nothing to do with politics."
And when Dixon tried to intervene, saying it wasn't his question but one from a viewer, Lynch replied:
"Yeah but it's rubbish. It's a nonsense idea. What political programme are we peddling these people behind me? What is the political angle in this dispute that you're alluding to?"
After some more back and forth, Dixon suggested the RMT's political angle might be "to bring down the Tory government".
"Well, when have we ever said that?" Lych said.
"We are here to settle an industrial dispute, which is about pay conditions and jobs as well as our pensions.
"It's up to the Tory party who they put in government. They have deposed at least two prime ministers without an election in the last five years. It's nothing to do with what railway workers are doing.
"We want the settlement of this dispute. And the idea that somehow 40,000 railway workers who are threatened with their jobs are going to bring down the government is nonsense, it's just peddling a myth."
People thought he had nailed it once again:
\u201c@SaulStaniforth @RMTunion Outstanding, well done Mick Lynch - this is inspirational \ud83d\udc4f\ud83d\udc4f\ud83d\udc4f\u201d