So, somebody set a a fake profile of the Czech ambassador Poland, fake page of the Czech state broadcast company, and also organized a fake demonstration through social media. The point of contention is the town of Těšín, a town in Silesia that is divided between Czechia and Poland. The town and region have been a point of contention between the two countries and a scene of occupation and a brief war.
And naturally the Russians are being blamed. And the Russians could be guilty but I think this is a bit amateurish. Perhaps testing the ground, or some FSB Academy students project. It could also be a fake planted by secret services in Poland or Czechia, and even the Ukrainian could be behind it because somehow pro-Ukraine media are massively posting about it.
Insomniac Resurrected 