Yuriy Romanenko, a blogger and political expert, walked off the set of a live discussion show on Ukraine's Zik Television last week, when he was asked by the host, Ostap Drozdov, to speak Ukrainian instead of Russian.
"We agreed that [you would speak] Ukrainian," Mr Drozdov said, to which Mr Romanenko responded: "Let me speak the way I want to speak."
When Mr Drozdov insisted it was a matter of principle for him, as a "Ukrainian-speaking journalist who has a certain policy in his own programme", Mr Romanenko insisted he did not want to.
"OK, then I would like to ask you to leave this studio," said Mr Drozdov.
Mr Romanenko acceded, removing his microphone and shaking hands with his host before walking off the set.