Alexander Dubinsky wrote a post on his Facebook predicting the imminent resignation of Dnipro mayor Borys Filatov. He justifies this by saying that firms owned by him and his partners have sharply raised the prices of their services, which supposedly indicates an attempt to "grab" profit while there is still an opportunity.
The mayor came to the comments and replied to Dubinsky rudely.
Soon after, Dubinsky wrote another post about Filatov, who again came to the comments and left the same text as in the previous post.
Dubinsky and Filatov have not been the first to trade barbs on Facebook. At one point the Dnipro mayor called him "Kolomoisky's talking a**".

Ihor Kolomoisky is Filatov's former business partner, with whom he worked in the Dnipropetrovsk regional administration after the 2014 revolution. But after Filatov was elected mayor of Dnipro, their paths with Kolomoisky diverged.
Dubinsky is an employee of the 1+1 TV channel, which is owned by Ihor Kolomoisky. He is often accused of defending the oligarch's interests.
In July, Filatov and Ukrainian President Volodymyr Zelensky made a bet: either the repair of the New Bridge is completed by September 14, or the mayor of Dnipro resigns.